They updated the list so that it makes a little more sense - they flipped the NJD and TOR games so NJD is the home opener (as has been officially annoucned), and moved a Habs game from October to December. They also added a couple of matinees, bringing the total to 6 (I think). Here's the preliminary, completely unofficial list - it's not completely sorted because it comes from 4 different 11-game plans.
[TBODY] [/TBODY]
Preseason: Boston Bruins vs New Jersey Devils
Wed, Sep 25, 2019 7:00 PM || TD GardenBoston Bruins vs Toronto Maple Leafs
Tue, Oct 22, 2019 7:00 PM || TD GardenBoston Bruins vs San Jose Sharks
Tue, Oct 29, 2019 7:00 PM || TD GardenBoston Bruins vs Buffalo Sabres
Thu, Nov 21, 2019 7:00 PM || TD GardenBoston Bruins vs New York Rangers
Fri, Nov 29, 2019 1:00 PM || TD GardenBoston Bruins vs Nashville Predators
Sat, Dec 21, 2019 7:00 PM || TD GardenBoston Bruins vs Edmonton Oilers
Sat, Jan 4, 2020 1:00 PM || TD GardenBoston Bruins vs Pittsburgh Penguins
Thu, Jan 16, 2020 7:00 PM || TD GardenBoston Bruins vs Vancouver Canucks
Tue, Feb 4, 2020 7:00 PM || TD GardenBoston Bruins vs Dallas Stars
Thu, Feb 27, 2020 7:00 PM || TD GardenBoston Bruins vs Detroit Red Wings
Tue, Mar 24, 2020 7:00 PM || TD Garden[TBODY] [/TBODY]
Boston Bruins vs New Jersey Devils
Sat, Oct 12, 2019 7:00 PM || TD GardenBoston Bruins vs Ottawa Senators
Sat, Nov 2, 2019 7:00 PM || TD GardenBoston Bruins vs Florida Panthers
Tue, Nov 12, 2019 7:00 PM || TD GardenBoston Bruins vs Montreal Canadiens
Sun, Dec 1, 2019 7:00 PM || TD GardenBoston Bruins vs Chicago Blackhawks
Thu, Dec 5, 2019 7:00 PM || TD GardenBoston Bruins vs Los Angeles Kings
Tue, Dec 17, 2019 7:00 PM || TD GardenBoston Bruins vs Washington Capitals
Mon, Dec 23, 2019 7:00 PM || TD GardenBoston Bruins vs Winnipeg Jets
Thu, Jan 9, 2020 7:00 PM || TD GardenBoston Bruins vs Arizona Coyotes
Sat, Feb 8, 2020 3:00 PM || TD GardenBoston Bruins vs Calgary Flames
Tue, Feb 25, 2020 7:00 PM || TD GardenBoston Bruins vs Columbus Blue Jackets
Mon, Mar 16, 2020 7:00 PM || TD Garden[TBODY] [/TBODY]
Preseason: Boston Bruins vs Philadelphia Flyers
Mon, Sep 23, 2019 7:00 PM || TD GardenBoston Bruins vs Tampa Bay Lightning
Thu, Oct 17, 2019 7:00 PM || TD GardenBoston Bruins vs Pittsburgh Penguins
Mon, Nov 4, 2019 7:00 PM || TD GardenBoston Bruins vs Washington Capitals
Sat, Nov 16, 2019 7:00 PM || TD GardenBoston Bruins vs Carolina Hurricanes
Tue, Dec 3, 2019 7:00 PM || TD GardenBoston Bruins vs New York Islanders
Thu, Dec 19, 2019 7:00 PM || TD GardenBoston Bruins vs Columbus Blue Jackets
Thu, Jan 2, 2020 7:00 PM || TD GardenBoston Bruins vs Montreal Canadiens
Wed, Feb 12, 2020 7:30 PM || TD GardenBoston Bruins vs Toronot Maple Leafs
Sat, Mar 14, 2020 7:00 PM || TD GardenBoston Bruins vs Ottawa Senators
Thu, Mar 26, 2020 7:00 PM || TD GardenBoston Bruins vs Carolina Hurricanes
Sat, Apr 4, 2020 7:00 PM || TD Garden[TBODY] [/TBODY]
Preseason: Boston Bruins vs Chicago Blackhawks
Sat, Sep 28, 2019 3:00 PM || TD GardenBoston Bruins vs Anaheim Ducks
Mon, Oct 14, 2019 1:00 PM || TD GardenBoston Bruins vs St. Louis Blues
Sat, Oct 26, 2019 7:00 PM || TD GardenBoston Bruins vs Philadelphia Flyers
Sun, Nov 10, 2019 7:00 PM || TD GardenBoston Bruins vs Minnesota Wild
Sat, Nov 23, 2019 7:00 PM || TD GardenBoston Bruins vs Colorado Avalanche
Sat, Dec 7, 2019 7:00 PM || TD GardenBoston Bruins vs Buffalo Sabres
Sun, Dec 29, 2019 7:00 PM || TD GardenBoston Bruins vs Vegas Golden Knights
Mon, Jan 20, 2020 1:00 PM || TD GardenBoston Bruins vs Detroit Red Wings
Sat, Feb 15, 2020 1:00 PM || TD GardenBoston Bruins vs Tampa Bay Lightning
Sat, Mar 7, 2020 7:00 PM || TD GardenBoston Bruins vs Florida Panthers
Sat, Mar 28, 2020 7:00 PM || TD Garden
That jives with my list
NBC has knocked out NESN for the 2 Montreal games in Boston as the Dec 1 game will be on NBCSN and Hometown Hockey in Canada.
The surprise is this game
Boston Bruins vs Toronto Maple Leafs
Tue, Oct 22, 2019 7:00 PM || TD Garden
as that will only be a regional game in Canada - HNIC usually gets both games in Boston on a Sat night