Players joining the team as main camp opens on Sept. 17 in Toronto include forwards Martins Dzierkals, T.J. Foster, Frederik Gauthier, Michael Joly, Kasperi Kapanen, Mitchell Marner, William Nylander, Jack Rodewald, Nikolai Skladnichenko, Nikita Soshnikov, Dmytro Timashov, Brady Vail and Carter Verhaeghe; defencemen Nikolas Brouillard, Travis Dermott, Stephen Desrocher, Cody Donaghey, Matt Finn, Aiden Jaimeson, Andrew Nielsen and Rinat Valiev, and goaltender Lucas Peressini.
Players who have been released to return to their junior teams include forwards Bradley Latour, Scott Eansor, Nikita Korostelev and JJ Piccinich, defencemen Cameron Lizotte and Brenden Miller, and goaltender Justin Nichols.