http://www.gameinformer.com/b/features/archive/2011/01/24/skyrim-building-better-combat.aspx?PostPageIndex=3
I just expect a standard push or kick. Maybe a perk will allow a small amount of damage to be delth with bashing or to use an arrow instead of your hand, but I wouldn't expect to much.
Edit: Bottom of the third paragraph, its in.
The way its says.......'you can still execute a bash move....' says to me that you can execute this move with any weapon, not just the bow.
saying it this way suggests that general concesus would have been that you cant use the bash move with a bow.
It would have said........with the bow you can execute a bash move........ if it was specific to the bow.
but thats IMO still a great feature if the backpeddling has been slowed down.