You are now able to pre-order your copy of NHL 15 digitally via XBOX LIVE on the XBOX ONE. You are also able to purchase it via XBOX.com and have it begin downloading upon it being available to do so.
The game is expected to be made available sometime tomorrow early afternoon and EARLY ACCESS available to anyone who purchased EA ACCESS (6hrs of gameplay).
http://store.xbox.com/en-US/Xbox-One...a-e00c136afaf5