The Pirates have promoted outfielder Austin Meadows and pitchers Tyler Eppler and Montana DuRapau to Altoona. The Bucs have also promoted outfielder Mel Rojas and righty Matt Benedict to Indianapolis.
Obviously, there are only a few games left in the minor league season, so these moves mostly just prepare Meadows, Eppler and DuRapau for the level to which they'll probably be assigned next year, while also helping Altoona for its playoff run and filling out the upper levels of the minors after the recent round of September call-ups.
Meadows and Eppler will also play in the Arizona Fall League; both have had productive seasons for Bradenton. DuRapau has done outstanding work in relief since the Pirates acquired him late in the 2014 draft, and this season he posted a 1.40 ERA with 66 strikeouts and just nine walks in 70.2 innings for the Marauders.
Rojas was the Pirates' third-round pick in 2010. He played much of last season at Indianapolis and got demoted to Altoona this year, though, so it appears the Bucs now think of him as an organizational player. Benedict is an organizational pitcher.