Did you notice the below message from John Garcia at SOM?
Hey guys,
With tomorrow being a holiday I just wanted to pop in quickly today with some exciting news. We will be launching a 1960's Mystery Game towards the end of August/early September called the Superstar Sixties. Over the past few months we have received many e-mails from users asking for a '60s decade mystery game and you will have it in the near future!
More than 600 players will be represented in this new player set including Hall of Famer's such as Mickey Mantle, Willie Mays, Hank Aaron, Frank Robinson, Warren Spahn, Bob Gibson, Robin Roberts, and Jim Bunning. The rest of the details regarding this new player set are still being developed, so look out for an another announcement on it in August.