From MaGog's logs for November 2:
NOTE! CHANGED Dreamfall Chapters - Special Edition Upgrade [DLC], sys_req_win: ***TO*** Windows XP SP3, Processor: Core 2 Duo 2GHz or equivalent, Memory: 3 GB RAM, Graphics: Intel HD Graphics 4000, Hard Drive: 5 GB available space, DirectX: Version 9.0c, Sound Card, Recommended system requirements - Windows: Windows 7, Processor: Quad Core i5 2.5GHz, Memory: 4 GB RAM, Graphics: ATI or Nvidia card with 1GB VRAM, DirectX: Version 11, Hard Drive: 20 GB available space, Sound Card
NOTE! CHANGED Dreamfall Chapters - Special Edition Upgrade [DLC], sys_req_mac: ***TO*** Mac OS X 10.7.0 or higher, Processor: Core 2 Duo 2GHz or equivalent, Memory: 3 GB RAM, Graphics: Intel HD Graphics 4000, Hard Drive: 5 GB available space, Sound Card, Recommended system requirements - Mac: Mac OS X 10.7.0 or higher, Processor: Quad Core i5 2.5GHz, Memory: 4 GB RAM, Graphics: ATI or Nvidia card with 1GB VRAM, Hard Drive: 20 GB available space, Sound Card
NOTE! CHANGED Dreamfall Chapters - Special Edition Upgrade [DLC], sys_req_linux: ***TO*** Linux Mint 17 / Ubuntu 14.04, Processor: Core 2 Duo 2GHz or equivalent, Memory: 3 GB RAM, Graphics: Intel HD Graphics 4000, Hard Drive: 5 GB available space, Sound Card, Recommended system requirements - Linux: Linux Mint 17 / Ubuntu 14.04, Processor: Quad Core i5 2.5GHz, Memory: 4 GB RAM, Graphics: ATI or Nvidia card with 1GB VRAM, Hard Drive: 20 GB available space
NOTE! CHANGED Surgeon Simulator Anniversary Edition [DLC], os: Windows (XP, Vista, 7, 8) ***TO*** Windows (XP, Vista, 7, 8) and Mac OS X (10.6.8 or newer)
[adding a forgotten Mac indication; still, the game itself supports Linux, but the DLC does not mention that]