A reunlock is in development and will be made available as soon we can, together with a method to reset your nck attempts, please stand by and watch the forums for further information. And again, DON'T upgrade to 1.1.1 if you are still on 1.0.2. Do all that on your own risk.
Preliminary reports say that the OS is downgrading but the modem firmware is not (aka, the modem firmware stays at 04.01.13_G instead of downgrading to 03.14.08_G). This allows use of Wi-Fi but not GSM functions (phone/edge/sms) unless you're using AT&T. Note: this only applies to fresh out of the box 1.1.1 or phones upgraded from 1.0.2 that was never unlocked. 1.1.1 iPhones that were previously unlocked at 1.0.2 with methods that fake the bb firmware version will have their firmware version remaining at 03.14.08_G.
Efforts are underway now to revert the modem firmware to its previous version by using bbupdate to flash the baseband back to 03.14.08_G.
At that point, we'll be back to where we started when 1.1.1 was released except that many more people will be willing to experiment with 1.1.1.

还得等。。。