Hey guys, if Apple follows their normal tactics, shortly after WWDC you'll see a new iTunes available for download to support the 2.0 firmware.
Just as a pre-caution, if you're unlocked, installing the new iTunes is fine, but don't install the 2.0 firmware yet. Give it a couple days until we notify its ready, and we'll have a guide on how to jailbreak/unlock the 2.0 production firmware. Also you'll need to give the devs a chance to get their apps working on the 2.0 firmware.
EDIT - Guess not. Well, still stands for when its released in July. 