My original target date for the start of the contest was June 1st, but that's two days away and the site's not gone up yet. I'd like to have it up for a few days before actually announcing the themes so that it can gather some publicity, but we'll see - if I get it up tomorrow then I might still hit the date.
I don't want to say too much about things until the site goes up, but the judging schema has been completely revamped, and the min spec is definitely better than last year.