Simple Question

I'm a bit confused about your question, Thehollowed.

Recruit a friend should work just like it always has been.

Recruit-A-Friend FAQ
http://us.blizzard.com/support/article/25716

To my knowledge there are no planned changes being made once Cataclysm comes out. All restrictions to grant a level do however still apply.

Q u o t e:
Are there are any restrictions on granting levels?

Yes:

1. Levels may only be granted to characters on a veteran account by characters on a linked recruit account
2. Levels may only be granted to characters of the same faction and on the same realm
3. Levels may not be granted to characters over level 59
4. Levels may not be granted to characters of equal or higher level
5. Levels may not be granted once a 90-day account link breaks
6. Levels may not be granted to veteran characters with XP gains disabled.

Should anything change in the upcoming weeks, an announcement will be made in any of our official sites.

http://blizzard.com
http://us.battle.net
http://worldofwarcraft.com