While inspecting the PC version of Hitman: Sniper Challenge demo, recently released as bonus to Hitman: Absolution pre-order, we have spotted interesting detail – this demo is utilizing PhysX SDK 2.8.4 engine for physics calculations.
Since Sniper Challenge is based on same new “Glacier 2” engine, developed by IO Interactive, it is safe to assume that Hitman: Absolution (and other future games on this engine) will be also using PhysX SDK.
PhysX is responcible for rigid body physics, character controller and collision detection, while cloth simulation is powered by CloakWorks Shroud engine.
However, we do not have any official or unofficial information regarding GPU PhysX support in Hitman: Absolution – most likely, it will feature only CPU based physics.
As interesting note, latest games by IO Interactive – Kane & Lynch: Dead Men and Kane & Lynch 2: Dog Days – were using Havok physics solution.