That's what I was thinking but they also mentioned PC. I'm thinking that they're going to try to release Dragonborn on PS3 and PC at the same time. Or Dragonborn is exclusive to Xbox and they have something exclusive in the works for PC and PS3.
For once though, I'm not quite sure why this one drifted to a separate thread. The others that drifted I saw as separate, but this I do see as pretty much the same.