Microsoftは2月27日(現地時間)、Windows 11のWindows Insider ProgramのCanaryチャンネル向けの最新ビルド「Windows 11 Insider Preview Build 28020.1673」をリリースしました(Windows Blog)。Canaryチャンネルで公開されるビルドは、将来の機能アップデートで追加される可能性のある、さまざまな新機能が先行して実装されています。プレビューチャンネルの中で最も不安定な可能性があり、提供されるドキュメントも限定的なものとなっています(例えば既知の不具合は掲載されないなど)。Windows Insider Programの更新オプションでCanaryチャンネルを選択し、Windows 11のプレビュー版を使用しているユーザーは、Windows Updateを利用して最新版に更新することができます。Build 28020.1673の新機能Build 28020.1673では、タスクバーからネットワーク速度テストが可能になりました。Wi‑Fi/セルラーののクイック設定やネットワークアイコンの右クリックから呼び出すことができます。実際の速度測定はブラウザ上で行われます。Quick Machine Recovery(QMR)の自動有効化範囲の拡大や、Emoji 16.0のサポート、設定の改良、ファイルエクスプローラーのダークモードの改善なども行われています。リリースノートは以下の通りです。What’s new in Canary Build 28020.1673Changes and Improvements gradually being rolled out with toggle on*[Emoji]The Emoji 16.0 releaseintroduces a small thoughtfully curated set of new emojis, one from each major category. Each emoji carries timeless symbolism and practical versatility. These new emojis now appear in the emoji panel.[Backup & Restore]The first sign-in restore experience is now part of Windows Backup for Organizations, bringing this restore capability to more device types. This experience restores user settings and Microsoft Store apps automatically at first sign-in on Microsoft Entra hybrid joined devices, Cloud PCs, and multi‑user environments. This capability helps create a consistent setup process during device refreshes, upgrades, or migrations.[Quick Machine Recovery]Quick Machine Recovery (QMR) now turns on automatically for enterprise managed Windows Professional devices, as well as Windows Professional devices that are not domain-joined. These devices receive the same recovery features available to Windows Home users. For domain-joined devices, QMR stays off unless it is enabled by the organization.[Taskbar & System Tray]A built‑in network speed test is now available from the taskbar. You can open it from the Wi‑Fi or Cellular Quick Settings, or by right-clicking the network icon in the system tray. The speed test opens in the default browser and measures Ethernet, Wi‑Fi, and cellular connections. This feature helps check network performance and troubleshoot issues.[Accounts]The account menu on the Start menu now includes a new option that directs you to the benefits page, making it easier to explore and manage your Microsoft account benefits.[Camera Settings]You can control pan and tilt for supported cameras in the Settings app. The controls appear under Settings> Bluetooth & devices > Cameras, in the “Basic settings” section for your selected camera.[Widgets]Widget Settings now open as a full‑page experience in the Widgets app instead of opening in a dialog.[Search on Taskbar]Group headers now show the number of results, so you can quickly see when more results are available. Select a group header to see all results for that group and hide results from other groups.You can preview search results by hovering over a result and selecting Preview to see the content without opening it.[Remote Server Administration Tools (RSAT)]This update adds support for Remote Server Administration Tools (RSAT) on Windows 11 Arm64 devices. IT administrators can now install and use tools such as Active Directory Domain Services and Lightweight Directory Services Tools, Active Directory Certificate Services Tools, Server Manager, Group Policy Management Tools, DNS Server Tools, and DHCP Server Tools. These tools are available as optional features and can be installed through Settings > System > Optional Features or from Control Panel > Programs > Turn Windows features on or off.[File Explorer]We’re continuing to make improvements to the dark mode experience in File Explorer. You will now see a consistent dark mode experience in the Folder Options dialog.Addressed an issue where all File Explorer open windows and tabs might unexpectedly jump to Desktop or Home.[Settings]Improved reliability of configuring options in Settings > Bluetooth & Devices > Wheel.[Nearby Sharing]Improved the reliability of sending larger files using nearby sharing.公式ブログには細かな変更内容がリストアップされていますので、インストールする前に確認することをおすすめします。