Eyefinity 5x1-Portrait Support in "Cayman" Driver

The long awaited for support for Eyefinity 5x1-Portrait is now here. 5x1-P support was added to the Cayman release driver. The driver will be available as a hotfix for 10.12 so that existing HD 5870 Eyefinity6 owners can take advantage. Details in this forum thread, and YouTube video coming soon. Update: 1080p YouTube Video.