Resolution increased to 2880x1600 (from 2160x1200) 78% increase
New redesigned headstrap with built in headphones
Uses SteamVR tracking 2.0 (new lighthouses)
Two front facing camera's
Price and when it will be available havnt been announced yet.
The vive wireless adapter will work on both the vive and vive pro
Pricing has not been released yet, but expect a summer release.