I am exploring the feature, but I have 2 observations.
First, I like the ability to browse the On Later listings in the client, but just like the On Now pages, it doesn't work well for movies. The tiles are landscape, but the movie posters are clipped rather than scaled. This means the top and bottom of the movie poster is missing, making it very difficult to know what it is.
(I believe it was mentioned that this was a platform limitation, and Apple's SDK does not allow for dynamic scaling. I find that hard to believe; but if that is indeed the case, another solution needs to be found. I know Gracenote provides poster images for TV shows, and I believe they similarly provide landscape images for movies. Could Channels grab the landscape images in addition to the posters for the movies, and use those in the On Now/Later pages? Or conversely, perhaps switch everything to poster images as DirecTV does in their guide?)
Secondly, when drilling down beyond the initial 9 airings that surface for a category I see multiple items with the "interesting" badge. Wouldn't it make more sense to surface those sooner? Or is their placement further down the list because of the sorting of the algorithm, placing programs from favorite channels higher on the list, and random channels lower? (If that's the case, then disregard this point.)