Exactly what the title says, if your running Gingerbread you can now temp root. I'm not posting a tutorial just a link to the thread. Big props go to Stuke00 and minneyar for finding this method.
Working EVO Shift Temp Root for 2.3.3 OTA [7/29/2011]
Working EVO Shift Temp Root for 2.3.3 OTA [7/29/2011]