Penny Marshall is planning on making two new baseball movies, both focusing on the Negro Leagues: one about Newark Eagles co-owner Effa Manley, who in 2006 was the first woman inducted into the Baseball Hall of Fame. The other will be a documentary about the Negro leagues in general.
Your mileage may vary when it comes to A League of Their Own, but on the whole, I think it's a pretty good movie, so there's reason to hope that these will be quality films. But really, given how damn few movies there have been about the Negro Leagues, anything will be welcome.