I knew those frog bastards would slap a laser in the MX510 and call it a new mouse.
The MX510 has the worst ergonomics of any mouse I have used in 10 years, but Logitech adopted a Form over Function "as long as it looks pretty that's enough" mentality with the entire MX series of mice, that was only showing signs of improvement with the MX1000.
The MX518 will be another step forward in technology, and a giant leap backward in ergonomics.
rms
EDIT: the digit-life photo does seem to show a longer and slightly taller mouse than the MX510, if true this would be very welcome.