http://www.donuts.co/ is running it. Most of these have nic.gtld up and running. nic.tattoo is my favourite so far.
I am with the impression that they wont be made available to the public - or at least not for a flat fee.
Actually I was of the impression that new gTLDs wouldn't be accepted unless they were generic enough and available to the public. (so no buying ".google")
Gandi has some listed on the site available for pre-order, but I don't see .today