Unless it's a gatherer or crafter I don't think we're going to see anything other than Arcanist at launch. Even Yoshi-P said Summoner probably won't be ready until after the first major patch after the game launches. My reasoning for this is on the home finalfantasyxiv.com site, Arcanist and Summoner were both blanked out on their respective pages until they were leaked and then revealed. There's no more "Coming Soon" boxes on the DoW and DoM pages, however we still don't have anything posted for the DoL or DoH yet.