Microsoft released the first build from the Windows 10 19H1 development branch today. Along with a bunch of new features, there are also a bunch of fixes, improvements, and known issues.
Build 18204 RSS
Microsoft today released Windows 10 build 17723 to the Fast ring, and it also released the first 19H1 build for those that opted into Skip Ahead, which is Windows 10 Insider Preview build 18204.