Logitech will be showing off the G502 Proteus Core mouse at PAX East this weekend. They released the specs today and the mouse is available from Amazon for $79.99.
The mouse is corded and has 11 programmable buttons. The DPI can be adjusted in game from 200-12,000 DPI and you can tune the weight and balance of the mouse using the provided weights. The most exciting feature of the G502 Proteus Core is its ability to adapt to different surfaces. It will sense the surface and adjust the sensitivity accordingly.