In the old Infuse for ATV2, we could se watched/unwatched movies/episodes.
This feature is "back" in the 4.1 Looking forward to the release.
Now I only miss one feature - being able to delete SMB content direct.
It is a very handy feature when you have watched something that you don't need to save for later.
Today, I use an app on my ipad to access the folder and delete the files
Then I exit the folder on infuse, and re-enter for Infuse to refresh the content.