W2S posted a link where you can download this firmware.
The PSP 2.0 firmware can be downloaded here, but it's Japanese so you might need a translator to read the page.
Fortunately, IGN also noticed this and posted the full feature list. They claim the new firmware works on US and Canadian PSPs and they explain you how to install the firmware on your PSP.
Here's the changelog:
- Revisions to strengthen security were added.
- An Internet browser was added.
- Go To was added as a feature under [Video].
(This applies to UMD Video) - A-B Repeat was added as a feature under [Video].
(This applies to UMD Video and video data saved on Memory Stick.) - 4:3 Screen Mode was added as a feature under [Video].
(This applies to video data saved on Memory Stick.) - Audio Options was added as a feature under [Video].
(This applies to video data saved on Memory Stick.) - AVC was added as a codec that can be played under [Video].
(This applies to video data saved on Memory Stick.) - Support for Memory Stick PRO Duo was added to [Music].
- MP4 (AAC) and WAV (LPCM) were added as formats that can be played under
[Music].
(This applies to music data saved on Memory Stick.) - Image transfer was added as a feature under [Photo].
- Wallpaper was added as a feature under [Photo].
- TIFF, PNG, GIF and BMP were added as image formats that can be displayed under [Photo].
- Korean was added as an option to [System Language] under [Settings], [System Settings].
- [Character Set] was added to [System Settings] under [Settings].
- [Theme Settings] was added under [Settings].
- WPA-PSK (TKIP) was added as a security method under [Network Settings].
- Settings for Infrastructure Mode under [Network Settings] were revised to be easier to use.
- Input modes were added to the on-screen keyboard.
- Previous Update: German, Spanish, French, Italian, Dutch, Portuguese and Russian were added as options to [System Language] under [Settings], [System Settings].
- Previous Update: Support to retain the screen mode setting was
added under [Video].
(This applies to video data saved on Memory Stick.) - Previous Update: Support to allow resume play after recovery from
sleep mode was added under [Video].
(This applies to video data saved on Memory Stick.) - Previous Update: Support to allow resume play of audio tracks after recovery from sleep mode was added under [Music].
- Previous Update: UMD Music can now be played under [Music].