So, can we paid race-change as well when the patch hits?
We still do not know. A Blue will have to respond, or we will have to wait untill the patch hits.
Lylirra posted last week to say that you can create new characters in the new race/class combos, but cannot race-change to them until Cata hits.
Edit to add link to Blue Post - http://us.battle.net/wow/en/forum/topic/1015371759?page=1#6