It's only the 6th. Why would both be live a day early? Unless you live somewhere else where it is the 7th,in that case they might still go live tomorrow.
Because Nintendo World had their pre-release today, meaning you could've officially gotten it. I'd like to be able to use Therian Formes of Thundurus or Landorus on my Black 2 and Tornadus on my White 2, but alas.