New PhysX System Software 9.12.0507 has appeared with leaked 302.71 Mobile GPU drivers.Release Notes are unknown..

Supports NVIDIA PhysX acceleration on all GeForce 8-series, 9-series, 100-series, 200-series, 300-series, 400-series, 500-series, and 600-series GPUs with a minimum of 256MB dedicated graphics memory.

• Includes the latest PhysX runtime builds to support all released PhysX content.
• Supports NVIDIA PhysX acceleration on all GeForce 8-series, 9-series, 100-series, 200-series, 300-series, 400-series, 500-series, and 600-series GPUs with a minimum of 256MB dedicated graphics memory.
  Note: Some applications may have higher minimum requirements.
• Experience GPU PhysX acceleration in many games and demos, some of which are highlighted in PowerPack downloads here.