This year's theme is outer space. According to a press release:

 

Calling all beings of the cosmos!  The countdown has begun and it is time to show your space-themed spirit. The Parade Committee encourages explorers of all ages to fire up their imaginations and blast off from Saturn (or your home) to participate in this year's parade. Dust off your moonboots, bedazzle your rockets, dress in your best galactic gear and join us for a celebration that is totally interstellar! There are a variety of ways to get involved including, but not limited to signing up to have a float, entering a band/music unit, marching unit, veterans unit, or public safety unit or volunteering on the parade committee. One small step for Northern Berkshire, one giant leap for fun-kind!