Initial reaction from the xda-developers forum has been positive, with no complaints of instability, and reports of increased WiMAX speeds with the new baseband installed. If the performance of the leaked ROM is anything to go by, Sprint can't be too far from pushing this update out to the public. If you can't wait for the official OTA update, and you're aware of the risks involved in flashing your phone, you can head over to the source link to try the ROM out for yourself.