Jim Montgomery confirms that there are several changes to the roster

Jake DeBrusk is set to join Charlie Coyle and Brad Marchand once again, this time on the second line. Meanwhile, the third line will feature a fresh lineup, with John Beecher and Morgan Geekie teaming up with Trent Frederic. However, there will be no changes to the first line or the defensive pairings.

The goal of these modifications is to infuse the team with renewed vigor and enhance the synergy among players on the ice.

Source Bruins insider: Jim Montgomery confirms multiple roster changes