Yes we've seen clouds on Mars before, but the ones in this new picture are the most beautiful!

oh yes! :

This is insanely cool. Clouds and weather on Meridiani Planum: http://marsrovers.jpl.nasa.gov/gallery/pre.../20041213a.html

beautiful clouds, I wonder if they'll be able to see sundogs.

Looks like they also found some morning clouds at Gusev as well, now that they finally got the observation into the timeslot at Sol 346...

Time for new clouds in Meridiani...
Click to view attachment
(Sol947, image 1N212249892EDN7600P1585L0M1.JPG, processed version)