Technology

Microsoft announces first test build for Windows 11 26H1, aimed at 'specific silicon' — Rumor mill suggests first "H1" release in Windows 11's history might be reserved for upcoming Arm PCs

Source

Tom's Hardware

Published

Nov 9, 2025

TL;DR

AI Generated

Microsoft has released the first test build for Windows 11 26H1, aimed at supporting specific silicon, potentially for upcoming Arm PCs. This update, Preview Build 28000, is currently in the testing phase and is expected to officially launch early next year. While rumors suggest it may be tailored for ARM devices like the Snapdragon X2 Elite and Nvidia N1X systems, Microsoft has not confirmed any specific names. Despite not introducing new features, 26H1 is built on the new Bromine core, hinting at significant upgrades when integrated into future releases. This marks the first time Microsoft has scheduled a major update at the beginning of the year, deviating from its usual yearly release cadence.

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