Eh, Tony (was) coming up with new versions of his tech all the time. But yeah, just re-watched the scene from Winter Soldier on Youtube, and I think that was a watch, but it wasn't a Rolex, so yeah, this is something completely different.
It will probably have something to do with Clint's family. Like, maybe that's how Maya got the information about his wife and kids ... though, that info seemed current, whereas you wouldn't think the watch would be, so who knows. I guess we will find out next week!