im currently on 2.2(ROOTED),now when Gingerbread comes out to the public and i update to it,i understand i will lose my root,but it wont mess up my Evo in any way correct?
Oh jeez.
When gingerbread comes out, the rooting/hacking community will have it ready for flashing on your phone before sprint will ever consider pushing an OTA for it. I guarantee it.
Now, if you want to update to gingy when sprint pushes it (pointless btw, because some lovely fellow at XDA will have it in a flashable rom in under an hour when it gets released from sprint), then id just unroot using the unrooting sticky in the hacks section, then accept the OTA.
No muss, no fuss.