In a conversation w/CVG ACP last week he stated the same things that "dragon" said above. His latest CVG newsletter stated that there would be an AE in late August, but this week I heard it could be slid to early September. You certainly can't count on it until you see it posted.
Regarding posting as someone questioned earlier in this thread, there is usually a "pop-up" in eCrew to let you know that a bid is out and the weekly Flight Ops enewsletter will generally give advance notice of it as well. If posted, you can access it from Delta Net or from eCrew.