On August 10, Microsoft released two new Windows 10 test buildings: A "Redstone 5" test is based on Fast Ring and a "19H1" building for Skip Ahead Ring.
(Only a reminder: 1
The Fast Ring Test Building, No. 17735, contains no new features, but quite a few fixes. It also contains many known issues, which are listed in the blog post. Microsoft is expected to roll out Redstone 5 to regular users starting in October 2018.
The Test Test Building, No. 18214, contains several features that are new to the building already in Redstone 5.
Microsoft The "Your Phone" app now works with Build 18214, as it alreaedy does for Redstone 5 testers. With the current development on Android, testers can get instant access to their latest Android photos on their PCs so they can copy, edit or ink on the pictures. On iPhone, your YourPhone app only allows users to pick up on the PC where they joined the browsers on their phones.
Building 18214 now also includes HTTP / 2 support, as well as CUBIC (the new standard TCP overload provider) Support. Support for these was recently added to Redstone 5.Build 18214 also contains a number of repairs and known issues, which are listed in the blog post.
It's not uncommon, at this point in the Windows development process, that Fast Ring and Jump forward Ring building is basically the same. (Inclusion of the basically completed Dark Explorer File Explorer is one of the features in Redstone 5 now, but not yet in the 19H1 built.)
Microsoft will probably not start adding any important new features to jump on for for a while – most likely a while after Redstone 5 was considered "backed" and closer to rolling out to the usual.