I haven't yet found the official changelog, but from what I can find from sites like WMExperts the update includes an updated radio (hopefully fixing some of the connection issues), updated Swype (it was unusable on the HD2 before), and stability and responsiveness fixes (all things I had trouble with). So, if all of this is true then the HD2 may now be the device I had wanted when I purchased it. I am a bit disappointed that T-Mobile did not come out on their forums and say an update was coming out thanks to all the issues that people had been reporting.