Flyers, Bruins, Panthers - Summer's Biggest Moves and Mysteries

Three Eastern Conference powerhouses are making noise before the puck drops, with Philadelphia exploring trade possibilities, Boston tinkering with its contract structure, and Florida continuing its aggressive summer overhaul. Each team is sending different signals about their championship window and how they plan to compete in a brutal Atlantic Division. The dominoes are still falling, and these three franchises could look dramatically different once the dust settles.