A few weeks ago we posted a rumor that Motorola was planning a February release for their forthcoming MPx220 Smartphone. Now Smartfone.net is confirming that there will indeed be an MPx220 Smartphone, that it will run the 2003 version of the Smartphone operating system, and that it will be available by the end of March. The kicker is that apparently it won’t be carried by AT&T Wireless (which currently offers the MPx220’s predecessor, the MPx200), but rather by T-Mobile.