The details are pretty sketchy at this time, but here’s a photo of a magazine:
No, this (probably) isn’t a confirmation of Angel Beats! Second Season.
Rather, this photo is revealing the content of the unaired 14th Episode of Angel Beats! that is scheduled to be included with Angel Beats! Volume 7. That is scheduled for release on December 22, 2010 by the way.
Apparently EP14 will have an alternate ending and Part C from TV editions.
Stay tuned for more Angel Beats! news sure to be leaking out towards the winter.