When Microsoft announced that Windows Mobile 6.5 would be available on phones starting Oct. 6 — and we're still trying to track down exactly how that's going to work — it name-dropped a bunch of carriers of manufacturers.

In North America: Mobile operators AT&T, Bell Mobility, Sprint, TELUS and Verizon Wireless, and phone manufacturers HP, HTC Corp., LG Electronics, Samsung and Toshiba Corp.

Noticeably missing from that motley crew is T-Mobile. And it's even more apparently because ol' T-Mo is the only carrier to currently have a phone in the wild that we know officially supports Windows Mobile 6.5.