Anybody with enough money can register a gtld now, unless there is significant opposition you'll get it.
Most of the big registrars have fully embraced the new TLDs. You can register most of them anywhere. I'm a fan of Gandi, as they are super explicit and summarise the rules and requirements of each very plainly.
http://newgtlds.icann.org/en/program-status/delegated-string...
Jesus - who came up with these?
Also - anyone know where you can register any domains with these new delegations? Is it on a registrar-by-registrar basis?