Microsoft has released Windows 10 build 15063 both for PC and Windows phone to the First ring users.
Earlier in 15061 the Edge browser used to hang and completely unresponsive, that has been fixed in this build.
Also the following has been fixed too.
- where the localized files and registry keys associated with any additional language packs on the system would not be installed after enabling .NET Framework 3.5.
As we are approaching RTM version so it is expected that no new features will be added only fixing minor bugs.