C Joe Mauer, 1B Justin Morneau, and RP Joe Nathan were voted in to play in St Louis this year. Mauer will start behind the dish, and Morneau with serve as a backup with Nathan in the pen.
Personally speaking, I think Span got the shaft this year. He's been seeing (and hitting) the ball well, while his defense is always solid. He did struggle there for a while before he went on the DL, but I still think he should have gotten a chance to play this year.