While Windows 10 build 19002 was released to Insiders yesterday, unfortunately it shipped with the same exact bug preventing shutdown or restart for a limited amount of testers. Here's a fix for that.
Windows 11 build 23545 fixes a number of File Explorer bugs and more
windows 11 insider preview
Build 18999 RSS
Microsoft has released a new preview build of the Windows 10 SDK, matching last week's Windows 10 build in the Fast ring. There shouldn't be a lot that's new, but a blog post hasn't been posted yet.
In a rare Tuesday afternoon move, Microsoft today released Windows 10 Insider Preview build 18999 to the Fast ring. Unfortunately, it doesn't contain any new front-facing features.