Microsoft released its second Windows 10 SDK Insider Preview from the 19H1 branch today, bringing it to build 18282. There are a couple of Fluent Design changes, but not much else.
Build 18282 RSS
Today, Microsoft released the first Windows Server Insider Preview from the 19H1 development branch. The company still hasn't released a changelog, so there's no telling what's new.
Microsoft today released build 18282 to Insiders in the Fast Ring and, in addition to some new features, there are some bug fixes and known issues to be aware of before installing the update.
Microsoft has released yet another build for Insiders in the Fast Ring, this time bringing the number to 18282. This release includes a true Light theme for the Windows shell and more.