There is no news of a second season being released but give it time there might be something install for 2013 but so far theres no release of a 2nd season.
Hey Pandora Hearts fans! I hate to say this. But no, they are not making a second season. Because the way it ended on anime. If they were planning to make a second season, then they would've make Oz kept the pocketwatch and Zai's chain not being destroyed. That is not how it's like in the manga. So I'm really sorry to say that they are not making a second season. I know, I wish they do. :( But, I'd would rather read the manga. It's way more clear.