Rumors have been spreading on the web about this
Their Helsinki nokia store closed down recently and in big words is posted Something Amazing is coming 7.9.2012, which means September 9 2012 BTW. I think Nokia will get a 1 month head time to sell wp8 phones. I don't know if that's true but I want believe this so bad :P
here is a link to the nokia site mentioned in the links above.
Disclosure: I am long NOK.