Those in the Fast Ring are now able to update to 17017. Not a whole lot of new features, numerous fixes. As usual – check the known issues to see if there is a show stopper for you!

Known issues

If you are experiencing broken functionality in Mail, Cortana, Narrator or missing some features like Windows Media Player, please see this Feedback Hub post: https://aka.ms/Rsrjqn.
Using a swipe gesture with touch to dismiss notifications from the Action Center is currently not working. We’re investigating – for now you’ll need to use the clear all button, or use mouse/keyboard.
There’s a noticeable screen flicker when using hotkeys or the touchpad to switch between Virtual Desktops.
Invoking the Game bar with Win + G may cause the mouse cursor to become unresponsive while Game bar is up. Keyboard navigation still works and pressing Win + G again will close the Game bar, restoring the mouse cursor to the game.
Calendar toast dismiss and snooze icons may be missing from notifications in Action Center.