Windows 10 April Update (Redstone 4) has been problematic for Microsoft. The company was forced to postpone the update’s original April 11 launch date due to a blocking bug. While the name of the release suggests it will arrive this month, it seems Microsoft will wait to the beginning of May for the launch.

Yes, that means there will be a certain irony surrounding the Windows 10 April Update actually arriving in May. The news comes from a Chinese retailor, which revealed in a leaked internal memo that the update will roll out on May 9.

It is worth pointing out this is Wednesday in China, but will actually still be Tuesday May 8 in the United States. That is one day after Microsoft opens its Build 2018 conference, so the release will coincide with the developer event.

That is an interesting situation because Windows 10 April Update never got an event introduction. Microsoft held a special event to announce the Creators Update and Fall Creators Update. However, the April Update was never unveiled in such a way and has not even been officially named by the company.

With the release delay, we now expect Microsoft to discuss the release at Build. On Monday 7 May, the company should be focusing on Redstone 5, which will be available this fall. However, we now expect the April Update to at least get a mention at the event.

Also of note is that the apparent May 8 release date will also be a Patch Tuesday.

Bugs

We wrote last week how a new bug found in Redstone 4 could prevent Microsoft’s release until May. The company released the RTM (release to manufacturing) build on the Insider Program release preview branch earlier this month. In other words, it was all good to go and would be rolled out on Patch Tuesday.

Instead, the bug prevented the release and Microsoft has been working on fixing it since.