Armature Studio also working on handheld version of Arkham Origins
Developer to focus on free-to-play, mobile, social and browser-based games
A number of developers depart due to 'shifting business imperatives'
Eric Holmes leaves the Gears group after 'golden opportunity'
Martin Carrier and Reid Schneider will both lead the new outfit
WBIE president Martin Tremblay says 300 staff will join outfit
Some positions 'eliminated' to reduce overlap and move towards shared resource
Warner Bros planning studio acquisitions, more internal games development and external signings
