There's still absolutely no indication that this phone is coming to the US. It's releasing in Korea, which runs on CDMA, but maybe this will be the HTC Kingdom that was being rumored a while back? Nontheless, without the kickstand (not having to use a case) and less internal memory, Photon 4G still would be my choice for upgrade.
Sense 3.0 looks fantastic to me, but I use Launcher Pro Plus currently, so the UI is irrelevant. And I really have to see Sense 3.0 in person in order to really determine if it's a stock launcher that I would stick with. As for the internal memory, it's been talked about in the 3D forums that 3gb or the 4gb on the 3d are taken up by Sense 3.0.
I have memory issues on my current EVO, so that would be a losing situation for me.