My guess is that it's a bit of a teaser and one time thing since I believe they are attending BA Funk Fest next weekend. Obviously, Pliny and Pig not sours, but maybe an easier introduction to the local beer nerds. I believe it's also on at Ginger Man and The Publick House. Row, Canary Square too seem like they are all getting it per the comments in the PHouse instagram post.
It was also available for a time at Ginger Man yesterday afternoon/evening. I've also seen that Tip Tap Room has five RR kegs, including one of Pliny.
The Keep in Lowell posted that they will be doing a Pliny vs Sip of Sunshine event on Thursday night too.
2007 me would be psyched. Now I’m “eh”. PtE & Blind Pig are good beers (prefer BP) & I enjoy them when in Denver or CA. If I happen to run across them I’d be happy to have a glass or two, but certainly not making it a must-have or appointment drinking. Would be cool to see those -nation beers available on draft or in stores too.