Ricoh Caplio R5 vs Ricoh Caplio R4

Ricoh have updated the megapixels (7.0 compared to 6.0), design (shape), layout (zoom control, mode button etc), colours (silver/red/black front, back always black), screen (230,000 pixels compared to 154,000), megapixels, ISO settings (upto 1600 available compared to 800 on R4), removed the anti-shake button (put it in a menu), video mode (640x480 vs 320x240), better battery life (380 shots vs 330), a "New Smooth Imaging Engine II image processing engine", and possibly more I can't think of right now, when compared to the Ricoh Caplio R4.