Kobato. just ended its run in Newtype..though there will be a special article about it in next month's Newtype. The final volume (6) will be out August 26th in Japan.
Yen Press is releasing the manga here in the US. Volume 4 will be out July 19th, and Volume 5 will be out in December.
Sentai Filmworks is releasing the anime. Kobato Collection 1 (containing episodes 1-12) will be out August 9th.