Sony Ericsson XPERIA X10 headed T-Mobile?

We already reported that the users manual for Sony Ericsson’s XPERIA X10 was leaked to the interwebs by the FCC. But if you happened to have a look at page three of the PDF, the Declaration of FCC Conformity, you will notice something interesting, 3G bands 1, 4, and 8 — better known as T-Mobile’s AWS 3G bands. Looks like T-Mizzle might be getting some Sony Ericsson love. Who’s excited?