The Backbreaker QA team has posted some demo hints and tips. Still no date confirmed.
"Backbreaker was designed around a new control scheme and a new way to play. Seasoned football gamers will instinctively want to hit the buttons to spin/juke/pass/truck etc. This is normal, but with a little practice you’ll be pulling off evasive and aggressive moves without thinking about it. To help get the hang of things:
i: Complete the training camp drills before leaping into Exhibition, this will give you all the tools you need to play the game.
ii: Consider playing Tackle Alley before Exhibition to help hone your basic running game skills.
iii: If you really don't get on with the dual stick controls after this, select "Alternate Controls" on the controller select screen. This moves the majority of controls to the buttons."