Check your phone, it was released to everyone this morning.
As long as you've applied FOREVER root, then yes. People install root, forget to apply the forever root patch, and then lose root after the upgrade and wonder why.Another option to be safe is to get Voodoo Rootkeeper and run that before you upgrade. It's free in the market.
Voodoo rootkeeper does not keep root through an OTA, not on the bionic atleast.