The news was first reported by Chris Cotillo of MLB Daily Dish:

Pacheco had played in 22 games for Colorado this year, with a line of .236/.300/.347. Allowing for Coors Field, that's an OPS+ of only 69, which is not too far off Pacheco's career figure of 78. It is, however, a great deal better than the team has got from their backup, Tuffy Gosewisch, who is at .194/.216/.306, an OPS+ of 43. While Gosewisch was always seen as a defense-first catcher, his offensive numbers were just so low, as to negate that.

No, it's not going to put the Diamondbacks over the top [and I will cut the first person to make the obvious sarcastic comment]. But it does address what was an area of need for the team, and little or no cost. If Pacheco can play up to his career numbers, that'll be a significant improvement, and even if he's only at this season's level, it'll be better than we've had to date.

[Update] The movie has been officially confirmed, with Nick Evans being DFA'd to make room - interestingly, looks like we will be operating with three catchers on the roster for now. The team also completed the Trevor Cahill move, sending him to Visalia.

The #Dbacks have claimed catcher/infielder Jordan Pacheco from the Rockies and designated Nick Evans for assignment. Pacheco will wear #31. — Arizona Diamondbacks (@Dbacks) June 12, 2014