The Left 4 Dead Blog has details on Riding My Survivor, this week's new community-created Left 4 Dead 2 mutation. Here's word on how this alters gameplay in the co-op zombie shooter: "This Versus Mutation is all about Jockeys. The Jockeys have increased health, speed and damage. The humans have increased hatred for the Jockey’s call. This community Mutation was created by Winded." Steam News has word on the automatic update with the new mutation, and more, as outlined in the patch notes below.

• New Community Mutation: Riding My Survivor
• Added support for raw mouse input on PC. Raw input reads directly from the mouse, bypassing Windows control panel mouse settings. This addresses issues with high DPI mice, and provides for a more reliable controller experience at various resolutions
• Improved Support for mouse acceleration, for use with raw mouse input
• Fixes for stability issues on some Intel chips
• Various rendering fixes for Mac