we covered yesterday. It's fast, functional, and even swaps Windows UI elements out for 360 controller button icons when you connect a 360 controller to your PC (a nice touch).
The next element of the GFWL reset is due next month: the Marketplace. We got to go hands-on with this standalone app and ... it's very much what you would expect. The Marketplace app will become available once the first GFWL DLC rolls out; load up a GFWL game and it will auto-download. Similarly, GFWL games will check upon starting up if there are any title updates – just like 360 games – and download / install them with no muss, no fuss.