PSp2gamer has just informed me that he has released a new version of the PSP web portal named MediaCenterPSP. This is the first that I’ve seen of this portal, and I have to say that it is looking great. If you are looking for a new portal, this one based on the default WindowsXP theme is one to look for.
-AIM, Yahoo, and MSN Messenger Login
-Multiple Search engine support
-Redesigned GMail Viewer
-8 Flash Games and Apps included and download center for more
-MediaCenterPSP QuikDate (Add new features right from the PSP)
-Brand new redesigned User Upload/Download Center
-File Browsing and Other Portal Loading support
-12 Hour Clock with Day of the Week
-PSP Snake (By Epixx)
-EtchNScetch (By Epixx)
More details and a Download link can be found in this thread on the official Playstation forums.