Anyway, I am the only one who reads this, right?

FoxTube.Core/Models/IRefreshable.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FoxTube.Core.Models
+{
+    public interface IRefreshable
+    {
+        void RefreshPage();
+    }
+}

FoxTube.Core/Models/Inbox/Changelog.cs

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+using System;
+
+namespace FoxTube.Core.Models.Inbox
+{
+    public class Changelog : InboxItem
+    {
+        public override string DefaultIcon => "\xE728";
+        public override string Title => "What's new in version " + Id;
+        public override string Type => "Changelog";
+
+        public Changelog(string version, string content, string description, DateTime timeStamp)
+        {
+            Id = version;
+            Content = content;
+            Description = description;
+            TimeStamp = timeStamp;
+        }
+    }
+}

FoxTube.Core/Models/Inbox/DeveloperMessage.cs

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+using System;
+
+namespace FoxTube.Core.Models.Inbox
+{
+    public class DeveloperMessage : InboxItem
+    {
+        public override string DefaultIcon => "\xE119";
+        public override string Title => _title;
+        string _title;
+        public override string Type => "Message from developers";
+
+        public DeveloperMessage(string id, string title, string content, DateTime timeStamp, string avatar)
+        {
+            Id = id;
+            _title = title;
+            Content = content;
+            Description = content;
+            TimeStamp = timeStamp;
+            Avatar = avatar;
+        }
+    }
+}

FoxTube.Core/Models/Inbox/InboxItem.cs

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+using System;
+
+namespace FoxTube.Core.Models
+{
+    public abstract class InboxItem
+    {
+        public string Id { get; set; }
+        public abstract string DefaultIcon { get; }
+        public string Avatar { get; set; }
+        public abstract string Title { get; }
+        public string Description { get; set; }
+        public string Content { get; set; }
+        public DateTime TimeStamp { get; set; }
+        public abstract string Type { get; }
+
+    }
+}

FoxTube.Core/Models/Notifications.cs

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+using Windows.Data.Xml.Dom;
+using Windows.UI.Notifications;
+
+namespace FoxTube.Core.Models
+{
+    public static class Notifications
+    {
+        public static ToastNotification GetChangelogToast(string version)
+        {
+            XmlDocument template = new XmlDocument();
+
+            // TODO: Add backend
+            template.LoadXml($@"<toast activationType='foreground' launch='changelog|{version}'>
+                                    <visual>
+                                        <binding template='ToastGeneric'>
+                                            <image placement='hero' src='https://xfox111.net/FoxTube/Thumbnails/Changelog?ver={version}'/>
+                                            <image placement='appLogoOverride' hint-crop='circle' src='https://xfox111.net/FoxTube/Avatars/Changelog'/>
+                                            <text>Changelog</text>
+                                            <text>See what's new in {version}</text>
+                                        </binding>
+                                    </visual>
+                                </toast>");
+
+            return new ToastNotification(template);
+        }
+    }
+}