Here are some notes from Neal Huntington, via Rob Biertempfel. Notably, Huntington rules out the possibility that any pitchers who "haven't been in the big leagues before" will make the team as relievers. It's unclear, but it's in the context of a discussion about starting pitchers who don't make the rotation, so he seems to mean guys like Rudy Owens, Bryan Morris, Jeff Locke and Justin Wilson. Huntington specifically names players who are out of options as potential bullpen candidates, and that includes Charlie Morton (if he doesn't make the rotation) and Jose Ascanio. Biertempfel also says it's "hard to envision" Kevin Hart, who is also out of options, being ready for Opening Day.
Finally, Huntington says there hasn't been much of a market for Ryan Doumit recently, but that that could change shortly.
-P- Also, Joe Beimel came down with elbow soreness yesterday and didn't pitch. He's day-to-day, but obviously, elbow trouble is always ominous news. If Beimel were to have some serious injury, predicting the composition of the bullpen could get a lot trickier.