According to this French source (translation) after being told by an unnamed French developer, the latest firmware of Sony’s PlayStation Portable (Version 5.00) will include direct access to the PlayStation Store, which was promised last month for Japanese gamers, an improved RSS reader with text file support and a screen capture mode that allows you to take screenshots during a game.
While the date has not been confirmed, the source speculates that the firmware would be released coinciding with the PSP-3000, or the PSP Brite, on October 14 or in the weeks following.