According to Baseball America (and with a captip to Street), we learn that Danny Meszaros has been reinstated from the inactive list.
If you recall, Meszaros, as well as Marcos Cabral and Jonathan Fixler, were suspended last August for 50 games for violating the league's substance abuse policy (which later turned out to be what seems like a tainted over-the-counter supplement.)
No idea yet as to where Meszaros will play, and it's certainly curious that Fixler and Cabral weren't re-instated, since their suspensions happened on the same day.