Good! This is needed badly. I hope they use the interface on more than just the channel store. No one uses that hardly at all. It is needed once you enter a channel. E.g. Revision3 is a side scrolling monster. Such a waste of screen real estate.
Apparently the "Netflix" type grid is available as part of the 2.7 SDK, so developers should be able to implement that type of interface and get away from the side-scrolling monster. It's just up to them to go through the effort of updating their channels. The newly revamped Pod TV channel makes use of the grid, for instance.