We recently learned that Microsoft gave development of its next Halo game to Activision, where “a new purpose-built team” – separate from the teams working on Call of Duty – has been created to oversee the franchise going forward. Now, in a report from well-known Halo and Xbox insider Rebs Gaming, a possible timeline about how the process progressed internally at Microsoft has started to take form. And the report suggests that Activision’s take on Xbox’s premiere sci-fi shooter will…