The Altoona Mirror has it. Some of the more noteworthy inclusions and omissions:
-P- The infield starters look to be Matt Hague, Josh Harrison, Chase D'Arnaud and Jordy Mercer, which means that Jim Negrych and Shelby Ford will be in reserve duty. Translation: Negrych and Ford really aren't prospects anymore, in case that weren't already clear.
-P- The only three outfielders on the roster are Gorkys Hernandez, Miles Durham and Alex Presley, which is weird, since Presley hasn't even shown he can hit at the Class A+ level. The Pirates released Jeff Corsaletti, a perfectly competent organizational outfielder, a few days ago, which is also weird.
-P- Rudy Owens will start the season with the Curve, which is a pretty aggressive assignment, since he's only played a handful of games at Class A+. Good for him. Justin Wilson and Tim Alderson will also be in the rotation.
-P- Danny Moskos will be in the bullpen, which basically suggests that the Pirates aren't taking him seriously as a prospect, as they shouldn't.
-P- Jeff Locke didn't make the team despite spending all of 2009 at Class A+. WTM suggests that Locke wasn't terribly impressive in camp--he was throwing 88-89 MPH, which isn't a disaster for a lefty, but he had trouble locating his breaking stuff.
-P- Ramon Aguero isn't listed, which is strange, because the Pirates assigned him to Altoona after cutting him from big league camp. I don't know if the roster isn't complete, or whether Aguero might have been assigned somewhere else. UPDATE: WTM writes that Aguero is injured.