Apparently, signups have started, but it's kept a closely guarded secret, as no one's posted it in the Bullpen.
So if you read the Bullpen by viewing your subscribed threads or search the threads you've posted, as opposed to going to the Community forum, you're clearly going to be out of the loop.
Link to the signup thread is here...
http://community.comicbookresources....ame-L-Sign-Ups
Many Bothans died to give us this information.
(It's a geeky reference joke, for those who are wondering).
And no, I don't really know what a Bothan is either. Especially since Expanded Universe materials are of questionable canonicity.