Epson Japan has today announced an upgrade to the image viewer P-2000 which doubles the capacity. The P-4000, features a larger 80GB hard disk, 3.5-inch LCD and new higher powered 2600mAh battery, compared to the 2300mAh battery in the P-2000. The device can display JPEG files as well as RAW images from the Epson RD-1 and also play MPEG-4 movies at 640 x 480 pixels. The P-4000 also has slots for CompactFlash Type 2 and SD cards. The expected retail price in Japan is around ¥70,000 (approx $629). More information as we receive it.