One of the more dominating releases for Space Marines this time around are the new Centurions. One kit of three models, these can made into both Centurion Devastators or Assault Squads. Both of these variants come with more firepower than we have yet seen on any single model. They are absolutely the last thing the enemy will see.
Officially until there is an announcement, we still have to classify these as rumors.
via anonymous sources on Faeit 212
Centurion Devastator Squad
These guys come with guns mounted into the sides of their chest plates, not to mention that they are carrying even more guns. Under both fists, they can carry Heavy Bolters, Lascannons, or Grav-Cannons. While their chests sports an array of either Hurricane Bolters or Missile Launcher. Whoa.... that is some amazing firepower.
Centurion Devastator Squad
These guys come with Siege Drills on each arm, with either flamer or melta attachments. While this alone would be a tremendous amount of firepower, they too come with chest mounted Hurricane Bolters or Ironclad Assault Launcher. If you were curious which models you need to shoot at first, these qualify with extreme prejudice.