Windows 11 25H2, as previously reported by Windows Latest, is set to be a modest update, with a broad rollout anticipated in October, or potentially at the end of September if no last-minute bugs arise. Currently, the update is available in the Release Preview Channel, and Microsoft has confirmed that ISO installation media files will be released shortly.
In a subtle update to its announcement from August 29, Microsoft indicated that the installation media files are forthcoming. Although the preview ISOs were initially expected in the first week, their release has been delayed. Nevertheless, this delay is not expected to impact the overall availability of the operating system.
On September 4, 2025, Microsoft updated its blog post, stating, “The ISOs for Windows 11, version 25H2 are delayed and coming soon.” The size of the 25H2 ISOs is anticipated to be substantial, similar to those for version 24H2. However, users upgrading from version 24H2 will experience a seamless installation process, as the update is less than 5MB when applied via Windows Update.
The update mechanism involves downloading an .ekb file, known as an enablement package, which requires only a single restart to implement the changes. This package activates features that are already embedded within version 24H2 but remain dormant until the update is applied. The transition from a disabled to an enabled state for these features is executed through the registry.
Microsoft clarified, “New features we develop for Windows 11, version 25H2 are part of the version 24H2 branch. When the new code is complete, we include it in the monthly LCUs for Windows 11, version 24H2, in a Disabled state.” Essentially, version 25H2 serves to activate these pre-existing features, allowing users to benefit from enhancements without a significant overhaul.
Future cumulative updates will continue to introduce new features for both 24H2 and 25H2, as they operate on the same foundational engine. Notably, Microsoft has reduced the size of recent cumulative updates by 40%, facilitating a smoother experience when accessing new features in the months ahead.
Trying out Windows 11 25H2 via Release Preview Channel
For those eager to experience Windows 11 25H2, joining the Release Preview Channel will grant access to the update. Once the OS is generally available, users can exit the Release Preview Channel while still receiving monthly cumulative updates, ensuring that device warranties remain intact.
Having utilized the Windows 11 2025 Update on my primary device for several weeks, I can attest that it mirrors version 24H2 closely. Users with an updated version of Windows 11 24H2 will likely notice no substantial differences post-installation. This means that existing issues present in version 24H2 will persist, and there are technically no new features introduced.
While the new Start menu will be available out of the box, it is also slated for release in version 24H2 in the near future. Microsoft previously clarified that the new Start menu, which allows users to hide the Recommended feed, will not be exclusive to version 25H2. All changes, including enhancements in power efficiency, will eventually be rolled out to all users.
Another notable addition is the introduction of colorful battery icons, which will also be made available to Windows 11 24H2 users. The primary distinction lies in the fact that Windows 11 25H2 will ship with these features readily accessible, while users of 24H2 will need to wait for gradual updates to receive similar enhancements.
