Yeah, the XPERIA X1 runs Windows Mobile 6.1
It probably shouldn't come as a surprise to anyone, but yep, that mysterious new version of Windows Mobile that Sony Ericsson was dread to discuss at MWC wasn't so mysterious at all -- it's just Windows Mobile 6.1. Granted, 6.1 still hasn't been announced to the world, but it's a well-documented rev that should do a decent job of holding us all over until 7 finally (finally!) happens. Given the pure hotness of the hardware, we kinda wish Microsoft actually had rolled some sort of crazy post-6.1 update just for it, but we guess Sony Ericsson's custom panel interface will have to pick up the slack there.
[Via SEfanatics]
