OL Jason Spitz, LG Daryn Colledge, CB Josh Bell, S Anthony Smith, FB Korey Hall, K Mason Crosby, LB Matt Wilhelm, WR James Jones, DE Cullen Jenkins, S Atari Bigby, FB John Kuhn, and RB Brandon Jackson.
I'd be surprised if they let Crosby leave because if he doesn't return, then they'll have to sign someone else very quickly. Smith seemed confident he'd be re-signed, and his return as a special teams ace does make some sense. Otherwise, I don't have a strong feeling they'll push hard to re-sign anyone else.
Despite tendering restricted free agent contracts to several players back in March, under the terms of the new CBA, the Packers don't have any actual restricted free agents. Everyone else is signed, or under the team's exclusive control.