The official slides from Build 2015 sessions reveal some interesting stuff. For one an screenshot shows that there may be six quick-action buttons in a row soon in the Action Center. You can also see how the new messaging app and actionable notifications allow reply by using the messenger. Looking forward to future builds.
One of the slides also confirms that Interactive Tiles are in works, something that has been confirmed by our sources also. Read more about interactive Tiles and watch the interactive tiles in action by clicking here.
Adaptive Tiles look interesting with ability to enhance live content on display.