diff --git a/src/Discord.Net.Core/DiscordErrorCode.cs b/src/Discord.Net.Core/DiscordErrorCode.cs
index ccd547e92..8301842d4 100644
--- a/src/Discord.Net.Core/DiscordErrorCode.cs
+++ b/src/Discord.Net.Core/DiscordErrorCode.cs
@@ -177,6 +177,7 @@ namespace Discord
         OwnershipCannotBeTransferredToABotUser = 50132,
         FailedToResizeAssetBelowTheMaximumSize = 50138,
         UploadedFileNotFound = 50146,
+        FeatureInProcessOfRollingOut = 50155,
         MissingPermissionToSendThisSticker = 50600,
         #endregion
 
diff --git a/src/Discord.Net.Core/Entities/ApplicationFlags.cs b/src/Discord.Net.Core/Entities/ApplicationFlags.cs
index 1ede4257d..0410f63b5 100644
--- a/src/Discord.Net.Core/Entities/ApplicationFlags.cs
+++ b/src/Discord.Net.Core/Entities/ApplicationFlags.cs
@@ -4,20 +4,31 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace Discord
+namespace Discord;
+
+/// <summary>
+///     Represents public flags for an application.
+/// </summary>
+public enum ApplicationFlags
 {
-    /// <summary>
-    ///     Represents public flags for an application.
-    /// </summary>
-    public enum ApplicationFlags
-    {
-        GatewayPresence = 1 << 12,
-        GatewayPresenceLimited = 1 << 13,
-        GatewayGuildMembers = 1 << 14,
-        GatewayGuildMembersLimited = 1 << 15,
-        VerificationPendingGuildLimit = 1 << 16,
-        Embedded = 1 << 17,
-        GatewayMessageContent = 1 << 18,
-        GatewayMessageContentLimited =  1 << 19
-    }
+    GatewayPresence = 1 << 12,
+
+    GatewayPresenceLimited = 1 << 13,
+
+    GatewayGuildMembers = 1 << 14,
+
+    GatewayGuildMembersLimited = 1 << 15,
+
+    VerificationPendingGuildLimit = 1 << 16,
+
+    Embedded = 1 << 17,
+
+    GatewayMessageContent = 1 << 18,
+
+    GatewayMessageContentLimited = 1 << 19,
+
+    ApplicationCommandBadge = 1 << 23,
+
+    ActiveApplication = 1 << 24
 }
+
diff --git a/src/Discord.Net.Core/Entities/Channels/ForumChannelProperties.cs b/src/Discord.Net.Core/Entities/Channels/ForumChannelProperties.cs
index e1a123b37..26b985b81 100644
--- a/src/Discord.Net.Core/Entities/Channels/ForumChannelProperties.cs
+++ b/src/Discord.Net.Core/Entities/Channels/ForumChannelProperties.cs
@@ -57,4 +57,9 @@ public class ForumChannelProperties : TextChannelProperties
     /// Gets or sets the rule used to order posts in forum channels.
     /// </summary>
     public Optional<ForumSortOrder> DefaultSortOrder { get; set; }
+
+    /// <summary>
+    /// Gets or sets the rule used to display posts in a forum channel.
+    /// </summary>
+    public Optional<ForumLayout> DefaultLayout { get; set; }
 }
diff --git a/src/Discord.Net.Core/Entities/Channels/ForumLayout.cs b/src/Discord.Net.Core/Entities/Channels/ForumLayout.cs
new file mode 100644
index 000000000..d20a10596
--- /dev/null
+++ b/src/Discord.Net.Core/Entities/Channels/ForumLayout.cs
@@ -0,0 +1,22 @@
+namespace Discord;
+
+/// <summary>
+///     Represents the layout type used to display posts in a forum channel.
+/// </summary>
+public enum ForumLayout
+{
+    /// <summary>
+    /// A preferred forum layout hasn't been set by a server admin
+    /// </summary>
+    Default = 0,
+
+    /// <summary>
+    /// List View: display forum posts in a text-focused list
+    /// </summary>
+    List = 1,
+
+    /// <summary>
+    /// Gallery View: display forum posts in a media-focused gallery
+    /// </summary>
+    Grid = 2
+}
diff --git a/src/Discord.Net.Core/Entities/Channels/IForumChannel.cs b/src/Discord.Net.Core/Entities/Channels/IForumChannel.cs
index 55521bade..09fb0fb7e 100644
--- a/src/Discord.Net.Core/Entities/Channels/IForumChannel.cs
+++ b/src/Discord.Net.Core/Entities/Channels/IForumChannel.cs
@@ -63,13 +63,18 @@ namespace Discord
         IEmote DefaultReactionEmoji { get; }
 
         /// <summary>
-        /// Gets or sets the rule used to order posts in forum channels.
+        /// Gets the rule used to order posts in forum channels.
         /// </summary>
         /// <remarks>
         /// Defaults to null, which indicates a preferred sort order hasn't been set
         /// </remarks>
         ForumSortOrder? DefaultSortOrder { get; }
 
+        /// <summary>
+        /// Gets the rule used to display posts in a forum channel.
+        /// </summary>
+        ForumLayout DefaultLayout { get; }
+
         /// <summary>
         ///     Modifies this forum channel.
         /// </summary>
diff --git a/src/Discord.Net.Core/Entities/Channels/IThreadChannel.cs b/src/Discord.Net.Core/Entities/Channels/IThreadChannel.cs
index 52df07dcc..be4967265 100644
--- a/src/Discord.Net.Core/Entities/Channels/IThreadChannel.cs
+++ b/src/Discord.Net.Core/Entities/Channels/IThreadChannel.cs
@@ -74,6 +74,11 @@ namespace Discord
         /// </remarks>
         new DateTimeOffset CreatedAt { get; }
 
+        /// <summary>
+        ///     Gets the id of the creator of the thread.
+        /// </summary>
+        ulong OwnerId { get; }
+
         /// <summary>
         ///     Joins the current thread.
         /// </summary>
diff --git a/src/Discord.Net.Core/Entities/Users/UserProperties.cs b/src/Discord.Net.Core/Entities/Users/UserProperties.cs
index 4cf4162a9..aeba6a234 100644
--- a/src/Discord.Net.Core/Entities/Users/UserProperties.cs
+++ b/src/Discord.Net.Core/Entities/Users/UserProperties.cs
@@ -69,5 +69,10 @@ namespace Discord
         ///     Flag given to bots that use only outgoing webhooks, exclusively.
         /// </summary>
         BotHTTPInteractions = 1 << 19,
+
+        /// <summary>
+        ///     Flag given to users that are active developers.
+        /// </summary>
+        ActiveDeveloper = 1 << 22
     }
 }
diff --git a/src/Discord.Net.Rest/API/Common/Channel.cs b/src/Discord.Net.Rest/API/Common/Channel.cs
index f9184cd1f..b8bfe1ea5 100644
--- a/src/Discord.Net.Rest/API/Common/Channel.cs
+++ b/src/Discord.Net.Rest/API/Common/Channel.cs
@@ -89,5 +89,8 @@ namespace Discord.API
         [JsonProperty("default_reaction_emoji")]
         public Optional<ForumReactionEmoji> DefaultReactionEmoji { get; set; }
 
+        [JsonProperty("default_forum_layout")]
+        public Optional<ForumLayout> DefaultForumLayout { get; set; }
+
     }
 }
diff --git a/src/Discord.Net.Rest/API/Rest/ModifyForumChannelParams.cs b/src/Discord.Net.Rest/API/Rest/ModifyForumChannelParams.cs
index d8733a2bd..ba5da8a3b 100644
--- a/src/Discord.Net.Rest/API/Rest/ModifyForumChannelParams.cs
+++ b/src/Discord.Net.Rest/API/Rest/ModifyForumChannelParams.cs
@@ -20,4 +20,7 @@ internal class ModifyForumChannelParams : ModifyTextChannelParams
 
     [JsonProperty("default_sort_order")]
     public Optional<ForumSortOrder> DefaultSortOrder { get; set; }
+
+    [JsonProperty("default_forum_layout")]
+    public Optional<ForumLayout> DefaultLayout { get; set; }
 }
diff --git a/src/Discord.Net.Rest/Entities/Channels/ForumHelper.cs b/src/Discord.Net.Rest/Entities/Channels/ForumHelper.cs
index 3d087e77d..4ecafd87e 100644
--- a/src/Discord.Net.Rest/Entities/Channels/ForumHelper.cs
+++ b/src/Discord.Net.Rest/Entities/Channels/ForumHelper.cs
@@ -56,7 +56,8 @@ internal static class ForumHelper
                         emoji.Name : Optional<string>.Unspecified
                 }
                 : Optional<ModifyForumReactionEmojiParams>.Unspecified,
-            DefaultSortOrder = args.DefaultSortOrder
+            DefaultSortOrder = args.DefaultSortOrder,
+            DefaultLayout = args.DefaultLayout,
         };
         return await client.ApiClient.ModifyGuildChannelAsync(channel.Id, apiArgs, options).ConfigureAwait(false);
     }
diff --git a/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs b/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs
index a2eef3d2d..7d837cde5 100644
--- a/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs
+++ b/src/Discord.Net.Rest/Entities/Channels/RestForumChannel.cs
@@ -41,6 +41,9 @@ namespace Discord.Rest
         /// <inheritdoc/>
         public ForumSortOrder? DefaultSortOrder { get; private set; }
 
+        /// <inheritdoc />
+        public ForumLayout DefaultLayout { get; private set; }
+
         /// <inheritdoc/>
         public string Mention => MentionUtils.MentionChannel(Id);
 
@@ -87,6 +90,7 @@ namespace Discord.Rest
             }
 
             CategoryId = model.CategoryId.GetValueOrDefault();
+            DefaultLayout= model.DefaultForumLayout.GetValueOrDefault();
         }
 
         /// <inheritdoc/>
diff --git a/src/Discord.Net.Rest/Entities/Channels/RestThreadChannel.cs b/src/Discord.Net.Rest/Entities/Channels/RestThreadChannel.cs
index 86e65d7b6..1555b2093 100644
--- a/src/Discord.Net.Rest/Entities/Channels/RestThreadChannel.cs
+++ b/src/Discord.Net.Rest/Entities/Channels/RestThreadChannel.cs
@@ -40,6 +40,9 @@ namespace Discord.Rest
         /// <inheritdoc/>
         public IReadOnlyCollection<ulong> AppliedTags { get; private set; }
 
+        /// <inheritdoc/>
+        public ulong OwnerId { get; private set; }
+
         /// <inheritdoc cref="IThreadChannel.CreatedAt"/>
         public override DateTimeOffset CreatedAt { get; }
 
@@ -76,6 +79,8 @@ namespace Discord.Rest
                 IsLocked = model.ThreadMetadata.Value.Locked.GetValueOrDefault(false);
             }
 
+            OwnerId = model.OwnerId.GetValueOrDefault(0);
+
             MemberCount = model.MemberCount.GetValueOrDefault(0);
             MessageCount = model.MessageCount.GetValueOrDefault(0);
             Type = (ThreadType)model.Type;
diff --git a/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs b/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs
index 8929a46f9..ed36f5d4b 100644
--- a/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs
+++ b/src/Discord.Net.WebSocket/Entities/Channels/SocketForumChannel.cs
@@ -45,6 +45,9 @@ namespace Discord.WebSocket
         /// <inheritdoc/>
         public ForumSortOrder? DefaultSortOrder { get; private set; }
 
+        /// <inheritdoc />
+        public ForumLayout DefaultLayout { get; private set; }
+
         /// <summary>
         ///     Gets the parent (category) of this channel in the guild's channel list.
         /// </summary>
@@ -93,6 +96,8 @@ namespace Discord.WebSocket
             }
 
             CategoryId = model.CategoryId.GetValueOrDefault();
+
+            DefaultLayout = model.DefaultForumLayout.GetValueOrDefault();
         }
 
         /// <inheritdoc />
diff --git a/src/Discord.Net.WebSocket/Entities/Channels/SocketThreadChannel.cs b/src/Discord.Net.WebSocket/Entities/Channels/SocketThreadChannel.cs
index 423e5504f..5c739c857 100644
--- a/src/Discord.Net.WebSocket/Entities/Channels/SocketThreadChannel.cs
+++ b/src/Discord.Net.WebSocket/Entities/Channels/SocketThreadChannel.cs
@@ -95,6 +95,9 @@ namespace Discord.WebSocket
         /// <inheritdoc cref="IThreadChannel.CreatedAt"/>
         public override DateTimeOffset CreatedAt { get; }
 
+        /// <inheritdoc cref="IThreadChannel.OwnerId"/>
+        ulong IThreadChannel.OwnerId => _ownerId;
+
         /// <summary>
         ///     Gets a collection of cached users within this thread.
         /// </summary>