Dejan Kovacevic of the Post Gazette tweeted that "Luis Heredia, 16-year-old Mexican RHP prospect, will pitch in GCL this summer."
That's pretty aggressive placement for a Latino player, especially one who is so young. Still, that doesn't mean that he's on a bullet train to the bigs. He has more than pitching to assimilate; young Heredia has to acclimate to the Gringo language and culture as well as learning the ins and outs of the hill.
But it's a good sign that the Pirates have enough faith in him to throw him straight into US pro ball. If he advances a level at a time, he'll be in Pittsburgh in 2016 at the age of 21, which isn't bad at all, hopefully ready to join a staff headed by Jameson Taillon.