Windows is expected to undergo significant updates in 2024, with potential testing of the next generation, often referred to as “Windows 12,” hinted at by recent feature updates in Windows 11.
The Windows 11 update could mark the start of Windows 12.

The most recent Windows 11 test update released on the Canary channel for Insiders resulted in a significant increase in their build number from 26047 to 27545, as reported by “XenoPanther” on “X” (new Twitter).
[Corrected]
There has been a build jump for internal canary!
26047 > 27547— Xeno (@XenoPanther) January 30, 2024
There has been a significant increase in the internal canary build jump to 26047.
Drastic increases in the number typically signal a new version of Windows or a completely new OS release. For example, the jump from 19XXX on Windows 10 to 22XXX on Windows 11 indicated a significant change. Windows users are now speculating that Build 27545 could be the initial hint of Windows 12’s upcoming release.
A summary of Windows 11 versions available on the stable and test channels is provided below.
Stable channel | Channel Beta | Canal Dev | Canal Canary (public) | Canal Canary (internal) |
Version 22H2 and 23H2 “Moment 4” Build 22631 | Build 22635 (“Moment 5”) | Build 23620 | Build 26040 (next “large” update) | Build 27545 (Windows 12 ?) |
The optional “Moment 5” update for Windows 11 is anticipated to be available by the end of February 2024, while version 24H2 is scheduled to be accessible on the Dev and Beta channels.