Looks like the Sprint EVO 4G will receive an official update as the ROM already leaked with version number 3.30.651.2 and Radio 2.15.00.09.01 – which looks to be the same. The update seems to be a minor bug-fix release with improvements to the camera but also brings a newer kernel and hBoot version.
XDA Developers already got busy with the leak and it’s available in both Odex and Deodex versions with root and busybox. As it is generally the case of Official ROMs and leaks, it’s just a matter of a couple of days until the leaked ROM will be available officially from Sprint for your Supersonic.
Source: XDA Developers