Microsoft’s KB5127936 (October 28, 2026 preview; builds 26300.9818 / 26200.9818 for Windows 11 26H2 / 25H2) lists a gradual-rollout [Taskbar] group:
- New! — the update improves animations of app window previews when mousing across app icons in the taskbar.
- Documented improvement in the same Taskbar group (in the extracted KB text, without a New! mark on this second bullet): improves the underlying state persistence of taskbar settings related to multiple monitors across monitor connections and disconnections.
Attribute the preview-animation change to the New! bullet; describe multi-monitor settings persistence as a documented improvement in the same group without calling it New! unless the official HTML marks it explicitly (extracted text does not).
The same KB notes that Windows 11 24H2 no longer receives non-security preview updates starting with the October 2026 release — so this optional preview track is about 25H2 / 26H2. Typical optional path: Settings > Windows Update > Advanced options > Optional updates. On a managed PC, ask IT before installing an optional preview.
No hands-on taskbar lab, no invented inventory of every multi-monitor setting: brief topic + discussion question. This is not a second article on policy-based in-box app removal / multi-session, nor Device Info (lot29), nor PowerShell 5.1 (topic 440).
Confirmed points
- Gradual-rollout [Taskbar] group on KB5127936
- New! improves app window preview animations when mousing across taskbar icons
- Multi-monitor taskbar settings state persistence (bullet without New! in extracted text)
- Non-security preview dated 28 October 2026 for Windows 11 25H2 and 26H2
Sources
Question: after KB5127936 (or an equivalent preview), do app window previews when hovering the taskbar feel smoother — and do your multi-monitor taskbar settings survive monitor connect/disconnect cycles better on your PC?