Well, we gots the Pump 101 day at AirSports in Ludlow, MA on Sunday, July 9:http://www.airsportspaintball.com/
Down the page is the banner that links to the forum.
July 23 is a pump gathering at Fox4 in Upton, MA, but I won't make that one...http://fox4paintball.com/forum/viewtopic.php?t=1642
And August 19, the Hatfields vs McCoys at Fox 4 (scenario/big game) looks like it'll have a fair number of pumps playing.
Camp Paintball in Kingston, MA always has a large pump crowd. Good fields, good prices, great people. http://www.camppaintball.com/
Down in CT there are occasional pump games, nothing with a real date yet.
Of course, there is the Mother of all pump games...Pandemonium 3 at EMR the weekend of July 14-16. Almost 100 players the first year, and near 200 last year. We're hoping this year will be bigger. http://www.emrpaintball.com/