Releasing Windows 11, version 26H2 to the Release Preview Channel

Microsoft has released Windows 11 version 26H2, Build 26300.9278, to the Release Preview Channel, allowing customers to test the annual feature update before its general availability. Simultaneously, the company launched the August 2025 preview update, KB5120998, targeting Windows 11 versions 25H2 and 24H2. This specific update introduces a wide array of fixes and improvements to the operating system, ensuring enhanced stability and performance for users across these different versions of the software.