Okay to return discussion to the actual movie, I have unable to find very many details. I did find this:
It has a speculated title for the DTV. "Superman: The Lost City of Krypton" and contains a plot synopsis as well. As well as being an emotional focal point of Geoff Johns run, it also was the catalyst for the start of the New Krypton story which immediately followed this arc. So perhaps this means we will get an animated version of New Krypton which would thrill me.