You might want to wait for it to be updated - there's a chance some of it will work, and parts wont, or it c ould just boot loop you.
If you really dont want to wait, just make a nandroid backup first - then flash the theme. If you have a problem, restore the backup and problem solved.
It will only work correctly if the framework wasnt changed - hard to say if it was or was not between those versions without having a close look.