Eric Gagne has been activated off the DL and Mark DiFelice has been optioned back to AAA.  No word on what role he will fill.  Ned did have this to add however:

"He needs to continue to work on his ability to get left-handers out," Yost said.

In theory, Gagne's change should be that pitch.  Change ups are naturally very effective against opposite handed batters so the fact that Ned is saying this implies that the change isn't all the way back yet.  Something to watch for when he takes the mound.