There's going to be an account wipe. RtRtR would be the logical point to do it, but then again, we're talking about Wizards here.
Don't forget, last week they eliminated Bo3 (Best of three matches w/sideboard) from the client, then realized they had to put it back in because that's literally what MtG is.
Oh, and the client is still occasionally wiping hard drives if you try to uninstall it.