In early December of 2008 my daughter and I completed a Platinum Challenge.
Two weeks later we flew from FRA-DFW and at check-in we were offered an upgrade from Y-J.
Two weeks later I flew FRA-DFW and ORD-FRA and was Op-Uped on both!
So as a brand new mid-tier I received Op-Ups on 3/4 of my first TATLs.