The openSUSE distribution is released every 8 months, and the next release is planned for March 2013, according to the official openSUSE roadmap. Version 12.3 beta 1 is now available for download  at http://software.opensuse.org/developer/en.

Days until openSUSE release

You can check the detailed roadmap in http://turing.suse.de/~coolo/opensuse_12.3/, if you are interested in contributing.

Have a lot of fun!