NHL 13 has already come out. It was released on September 11, 2012 in North America, Europe, Australia, and New Zealand.
September 13 or 14
This has yet to be announced. Although for the first time EA Sports is allowing the fans to choose the cover. On the link below, you can find the EA NHL 13 Cover Voting or just 'Google' NHL 13 Cover Vote and it should come up.
No it's only 2012 and I believe that you can preorder it in November or December.
NHL 13 is for Playstation 3 and Xbox 360.
It will come out on August 21 ea sports just released the date on their website
13 NHL seasons
The NHL schedule for 2012-13 is to be released on Thursday, June 20, 2012.
NHL 13 - 2012 VG is rated/received certificates of: USA:E10+
The cast of NHL 13 - 2012 includes: Bill Clement as Commentator
They have been in the NHL 13 years.
Not yet
Yes there is. Even in NHL 12.