Microsoft is rolling out a preview of April's Patch Tuesday updates for Windows 11, specifically for versions 24H2, 25H2, and 26H1. The Preview Update KB5079391 is available for versions 24H2 and 25H2, updating them to builds 26100.8116 and 26200.8116, respectively. Key improvements include rich image descriptions in Narrator, a toggle for Smart App Control, updates to pen settings, adjustments to the Settings interface, enhancements to voice typing, display reliability improvements, upgrades to natural voice in Narrator, and stability enhancements for the Windows Recovery Environment. For version 26H1, Preview Update KB5079489 is available, upgrading the system to build 28000.1764 and introducing features like Emoji 16.0, Quick Machine Recovery improvements, and a built-in network speed test, though many features have been seen in previous versions.