Das als DirectX 11 Ultra Upgrade beschriebene Pack soll unter anderem eine bessere Grafik und Verbesserungen bei Schatten, Wasser und Details bringen. Es bringt ebenfalls Unterstützung für Hardware Tessellation.
Hier der Originaltext
The DX11 Ultra Upgrade is a free visual improvement add-on introducing DirectX 11 support as well as a wealth of graphical improvements and performance optimization for both DX11 and DX9 API's.
When using the new “Ultra” spec, DX9 platforms will beneficiate from realtime local reflections and contacts shadows. The owners of DX11 platforms, in addition, will be able to enjoy hardware tessellation (requires the installation of the “Tessellation Package”), parallax occlusion mapping and several improvements for shadows, water, particles, depth of field and motion blur.
Quelle und Link zur Seite: http://www.mycrysis.com/dx11