About a week ago PS3 Firmware 3.61 was released,today Sony Network Entertainment VP Eric Lempel announced that PSP System Software Update version 6.39 is incoming.
The 6.39 PlayStation Portable update will essentially do the same as the 3.61 update did for PS3, requiring users to change their PSN passwords to login for security purposes.
Download: PSP Firmware 6.39 Update / PSPgo Firmware 6.39 Update (PSP-N100x only)
To quote: "Hi everyone. A new PSP system software update, v6.39, will be released soon. With this update, users who need to change their PlayStation Network password will be guided through the process.
Also, system software stability during use of some features will be improved."
As always, we will update the article as soon as it's released with the related download links.