It's the annual Drupal Global Sprint Weekend, happening all over the world on the last weekend in January, the 30th and 31st.
Acquia, along with Genuine Interactive and OwnSourcing, will be sponsoring the Boston location, so if you live in the general area, please stop by.
Genuine's office, in Boston's South End, is spacious and inviting. And there will be a free lunch and plenty of beer.
When: Saturday, January 30, 10 am to 5 pm; Sunday, January 31, from 10 am to 3 pm.
Where: Genuine, 500 Harrison Avenue. 5R, Boston, MA
The New England event page has all the particulars.