According to Sankaku Complex, the second season of K-ON! moe-blob anime would be named K-ON!! , and it's airing date is confirmed on 6th of April, that is a day before my birthday!
Hope that it would be one of the best present I get ^^
However, the air time is at 0125 hours of the day, during the Otaku O'clock where most people are asleep. Would you stay up all night to watch K-ON!! ?
Source - WARNING: GURO POST IMAGE! Sankaku Complex