Among the flurry of Otakon announcements, one was hiding that informed from the Area 11 mothership: apparently Haganai is getting a second season. I'm a little hostile to the idea, considering that manga hasn't ended (to the best of my knowledge, anyway), but nobody asked me when they planned this. There is a danger that they owners are going to run the item into the ground, and it would be a pity. Unless, of course, the S2 sets a definitive end, in which case it would be awesome. But ask yourself, how likely is that?

UPDATE: Fencedude corrected me: the canonical source is a light novel, manga is a sister adaptation to the anime.