Luke Jackson, the righthanded pitcher who was a supplemental first round pick of the Rangers in 2010, is being moved from the rotation at AAA to the bullpen, per various reports.
Jackson has been a starter for virtually his entire time as a professional -- he's started 97 of 101 games in the Rangers' system. However, there's been talk for a while that he profiles more as a reliever long term than as a starting pitcher, and so the move itself isn't necessarily surprising, although the timing of it is.
Jackson was very good at AA Frisco in the first part of 2014, and earned a promotion to Round Rock at the end of June.