Ill be writing more about the features in the future. Here is the bullet list from the Shade 10 press release:

• Multipass Rendering. Render images into layered TIFF files that allow post processing of each discreet effect
• Workflow Enhancements. New, interactive 3D manipulator, custom work planes, fully customizable viewports
• Fur Support, New Hair Operations. New support for adding 3D fur, hair masks, additional hair styling tools, hair collision detection and gravity
• Switch Joint. A new interactive joint object allows models to switch between alternative geometry.
• External Surface, Geometry References. Shade 10 files can reference external surface materials, geometry and more
• Global Illumination Enhancements. Path Tracing + Photon Mapping, save Irradiance Cache, Irradiance Cache with Shade GRID
• Toon Rendering Features. New Half Tone and Color Half Tone presets, multipass rendering with Toon Renderer
• PoserFusion: Poser 8, Poser Units. New support for Smith Micro Poser 8 for incorporating or hosting Poser characters in Shade. Improved Poser units support for developing content for Poser.
• Export to COLLADA. Now export Shade models to industry standard COLLADA for use in other applications, game engines, simulations
• Export to Second Life. New export Shade models as sculpted prims for use in Linden Labs MMO
• Export to Blue Mars. New export Shade models as digital assets for the Avatar Reality MMO
• Native 64 bit operations on Mac OS X. Supported with Mac OS X 10.6 on Intel

Shade 10 is available in three different versions: Designer ($49), Standard ($249) and Professional ($899).