The soon to be announced Panasonic 70-200mm L-mount lens has 77mm front filter,0.92m close focus and f/2.8 aperture

L-rumors spotted this new image posted on Digitalcameraworld. This new updated prototype lens unveiled some more new details:

From its size and 77mm front filter thread, it look almost certainly to be a 70-200mm f/2.8. You can also clearly see that the closest focusing distance of the lens is 0.92m (3.02 ft).

Panasonic is rumored to announce the full specs and pricing of the S1-S1R cameras and S lenses in 1-2 weeks!