Behold, the HD2 that we'll see on T-Mobile. HTC's product page for the device is now live, and we learn that it's getting a memory boost over its European brother. ROM capacity will be 1GB (up from 512MB); and RAM is up from 448MB to 576MB.
An easy answer for the change could be that's what T-Mobile ordered. But that's no fun, is it? A better guess is that in testing Windows Mobile 7 on it -- remember that we're all assuming it's getting WM7 -- a need for more memory was discovered. Either way, it's not a huge bump up, but we're not the types to turn down free RAM. (Thanks to everyone who sent this in!)