iOS 6 Beta 3 firmware will be available at iOS Dev Center today, according to iH8Sn0w (A developer behind Sn0wBreeze jailbreak tool and iFaith).
iH8Sn0w has predicted on twitter that Apple will release iOS 6 Beta 3 for developers at 10am PST today by following the pattern.
Everyday is getting closer to @JailbreakCon. I’m super excited! Side note: iOS 6 beta 3 may be hitting dev portals at 10am PST today.