Firmware 2.0 is now available here. Once downloaded hold the shift key in iTunes and select the downloaded firmware. This will break your jailbreak or unlock. We are testing and will let you know how it goes. So far Gizmodo has loaded it successfully.
UPDATE: See comments below for updates.
UPDATE 2: We now have Firmware 2.0 working on Brooke’s iPhone. We have installed a few apps and all is working well!
You can also get it on our Firmware Page.