Joystiq, going by a rumor in the latest issue of Official Xbox Magazine, reports that Halo 4 is in development at Gearbox Software and will launch alongside the Xbox 720, or whatever it is called by Microsoft.

Gearbox is best known for its work on the original Brothers in Arms, which has a sequel on the way; it will soon release Samba de Amigo and its future lineup consists of Aliens: Colonial Marines and Borderlands.

Meanwhile, Halo creator Bungie has revealed that it is working on a new game in the shooter series, though no details have been released yet. Two more Halo titles are also in the works – Halo Wars and a project from Peter Jackson.