Crossbow, the successor the WM5 was very recently announced, and is due early 2007. Would the XV6700 be upgradable? Or is some phone software proprietary on this device...

http://gizmodo.com/gadgets/cellphones/windows-mobile-5-successor-will-have-builtin-im-office-2007-links-169330.php

You won't see that for probably 2 years at which point there will be a far better device than the 6700. Also providers much provide the updates in the end and if they are not interested in maintaing a 2+ year old phone they will not bother.

That's right. The 5 month testing period for Sprint to test and approve WM5 was actually pretty quick. The norm is the roughly 8 months that it took Verizon to test and approve it.

It will also depend on the product cycle for HTC (or another mfg) to make a device that's compatable. It'll be damn near '08 before we see a converged device running "crossbow". (WM7?)