BOSTON, April 14, 2015 /PRNewswire/ -- On June 11, 2015 the third annual Boston TechJam will return to Boston's City Hall Plaza to gather a diverse group of Boston-area entrepreneurs, startups, established tech and tech-enabled companies, venture capitalists, non-profit groups, students and artists in celebration of the region's technology ecosystem and culture. The event uniquely combines a tech block party, innovation showcase and live music to connect the tech community's contributors with peers in a fun and non-traditional way.