Robbo and Kev will get offered deals IMO. They both showed on Saturday they are still very good players.
Cammy is a more difficult. We would all love to see him kick on, but he just hasn't done that consistently enough for me. He's not a full back and, despite doing OK there, isn't the answer going forwards. He hasn't ever had many games in his natural central midfielder role and that to me means managers don't think he's good enough there. As you say, it would be difficult to tell him (or the other two) he's being released.
Yeah, I'd say Sammo was still fit enough. I expect we'll offer him a deal - he seems to be a good guy to have around. Maybe Andy will get him involved in coaching too.