Windows 10 21H1 ‘Spring 2021’ update inches closer to release

Windows 10 21H1 leak

Microsoft has begun the preparation work on the next Windows 10
feature update “21H1” due to land in the first half of 2021. As
we reported last year, Windows 10 version 21H1 will be a minor
one and
Sun Valley redesign will be introduced in the fall,
according to the latest from the grapevine.

In 2021, Microsoft is doing things the other way round to
adjust the release cadence of its Windows 10 major updates. As
a result, version 21H1 will be a minor update, and Microsoft
has already finalized the changes that will be included in this

Windows 10 21H1, which is a service pack-like minor update,
will be released in the spring (between April and May) followed
by a big design refresh codenamed ‘Sun Valley’ or ’21H2′ in the

According to references found in Windows 10 KB4598291,
Microsoft has finally started testing the enablement package
that will update your device to ‘version 21H1’. This also
confirms that the Windows 10 Spring 2021 update is a small
download, at least if you’re upgrading from version 20H2 and

Essentially, Windows 10 21H1 download is a simple ‘on switch’
or a tiny enablement package, which will be released to enable
new feature already present in the latest cumulative updates
for version 20H2 (October 2020 Update).

However, if you’re upgrading from a year old version of Windows
10, the size of the 21H1 would be more than 3GB, which is the
common size for the big release. If you’re on version 20H2
(Ocober 2020 update) and you haven’t installed the most recent
update, the download size would be less than 500MB.

Since Windows 10 version 21H1 is based on October 2020 Update /
May 2020 Update, it’s likely that the build number will advance
to ‘19043’ from 19042 or 19041.

Windows 10 21H1 expected release date

Windows 10 version 21H1 is not expected to launch until April
or May 2020, which means the update will be tested with users
in the Release Preview Ring for the next few months.

While the first update of the year is going to be a minor
release, the second update of 2021 will be a big one and

it will introduce a new Windows 10 UI teased by Microsoft

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