Sony has take one step further by expanding the storage memory for Memory Stick PRO Duo to 4GB, MSX-M4GS. The high capacity MSX-M4GS is able to store up to 2000 tunes, 1132 JPEG file and even record up to 9 hours of video. You won't be able to see it on the market until early August. It's stated open price but will probably hits the street with the price of 29,800Yen which is about USD257.

[via SONY]