We’ll try our best to reply to every request within 24 hours — usually much less. How fast can we really go? Send us a request to find out (but please only if you have a question, or want to tell us what a fabulous job we’re doing).
From my experience, WP.com’s support was already quick enough to respond, usually taking 1 day to reply. I can only assume this will make the whole WP experience even better. Great move.