Sign-ups are open now, all using the same form. Sign-ups will not close until two days before the authors' drafts are due. The idea is that at any time if you realise you have a GBB-appropriate story going on you can go 'oo! me too!' and jump in to join. You will not, however, get any extension for that: you are still bound to the draft due date of June 30. Artists can also sign up until that date, because artist claims will follow immediately after I’ve sorted through the drafts.
And by the way - that date, and the rest of the schedule? Designed to fit around the @sabrielbigbang. There's a little over a month and a half between the due dates, so it should be manageable for those who want to do both.
Make sure you read the rules/schedule and instructions.
I know you’ve got a Gabriel story to tell. COME AND JOIN US!