T-Mobile’s Windows Mobile powered HTC HD2 should only be officially going on sale on Wednesday, but it seems that someone managed to get a unit before the official date from Walmart, and even posted a video (after the jump) showing the device being unboxed. HTC’s HD2 is certainly an amazing phone, but with the announcement of Windows Phone 7 Series, you have to wonder if T-Mobile is getting this phone a little too late? Would you get this phone when it’s released by T-Mobile, or are you planning on holding out for a newer phone?