Microsoft has released updates to come to its core apps in Windows 10. The updated apps include Mail & Calendar, Alarms & Clock, OneNote, Movies & TV, News, Phone Companion, and the Calculator.
The Movies & TV app now lets users find television show they don't own yet along with bug fixes, and live tiles will be coming soon. All of the other apps don't show any apparent changes other than small bug fixes and enhancements.
RTM (release to manufacturing) is getting close, so the Windows team is spending most of its time fixing bugs as opposed to adding new features. So any new builds Insiders receive from now until RTM, likely won't have any big new changes, instead the builds will increasingly stabilize.
Now that Windows 10 is a service, Insiders should continue to receive new features and updates over time. Windows users should expect Windows 10 to continue to become more awesome as time goes on. As for the future, Insiders may never have to worry about buying the next version of Windows again, as Microsoft has stated in one of their blog posts, "we will never be done" with Windows 10.