Josh TholeAccording to Adam Rubin, Josh Thole has been promoted from Triple A Buffalo. Henry Blanco has been placed on the bereavement list.I'll update as we get more info.Update 1: As Michael Diaz from MetsMinorLeagueBlog.com  notes,
Thole was hitting .203 with 10 RBI in 21 games for Buffalo.   Thole had a dreadful April, hitting .172 (10-58) in 15 games.   He has since heated up a bit in May, hitting .286 (6-21) in 6 games.  
Update 2: Aside from Barajas and Blanco,  Thole and Santos, are the only other catchers on the Mets 40 man roster. Santos, however, was sent down to Double A Binghamton and replaced by Shawn Riggans.