Guesses on Next Star Reward Unlock

I mentioned this when 1.1.1 first came out, but there's a pending new reward for achieving X number of stars. We can't see the required number yet, although I'm guessing it is more than whatever 100 percent would be now.Any guesses on what it is? It appears to be a silhouette of the GPM, so my guess was that it's going to default the GPM to a certain percent of the rainbow bar filled. Something to accommodate for them fixing the friend GPM exploit.