I saw that SABR's 50th annual convention is going to be in Baltimore this summer. The speakers look interesting, and the day at Camden Yards talking to players and executives could also be great.
I'd also seen speculation that there might be a panel or two on Jim Bouton, since there's a new biography on him coming out, and it's also the 50th anniversary of Ball Four.
And I assume people like Bill James, Rob Neyer, etc will be there. Not sure about Keith Law.