Looks like phonenews [via] is hosting a sneaky update for you Verizon XV6900 owners. Namely, a Windows Mobile 6.1 update that adds a raft of new features: EVDO Rev A, 6.1 (duh), Opera Mobile, and VZ Navigator. As is Verizon's wont, the GPS will be locked down to only work with VZ Navigator, but a workaround is expected.
Since we BGR just said that the Touch Diamond on Verizon is getting pushed back to January, this looks like the best bet for you non-physical-keyboard Verizon folks. Hop to it!
Thanks to Berger for the tip!