I just recently watched the 30-second trailer for the upcoming OVA for Clannad. Its said to be released in the final DVD version this July.
I think KyoAni is getting busy these days. Clannad Tomoyo-hen, Clannad After Story, Lucky Star OVA then Haruhi 2… I hope there would be an announcement for an anime adaptation for Little Busters! too..