Theres supposed to be a version a "Who says.." featureing Keith Urban which we might get to hear someday.

What I've heard is:

Unbreakable
Dirty Little Secret
These Open arms
HAND (original)
I wanna be loved (original)
Bells of Freedom (orginal)
Nothing
Who says - sugarland

as far as I know these are the only demo's/ alternate versions available other than the Keith urban song.