Konami today announced Metal Gear Solid: Portable Ops Plus for PSP. The expansion pack for the Metal Gear Solid: Portable Ops stealth-action game will be sold as both a standalone product and bundled together with the original across Japan on September 20th, 2007. No release dates for other regions were announced, but the first trailer was released online in English suggesting a worldwide release of the pack.
New features include:
* New Multiplayer Maps.
* New Unlockable Characters, including Raiden, a female Ocelot, and Roy Campbell.
* New Multiplayer modes.
* New Single Player mode, called Infinity Mode. New missions and enemy types.
* Metal Gear Solid 4 old Snake playable.
This update is aimed mostly at the Japanese and Americans, since Europe already got a little more extra content in their MGS POPS release. Watch the debut trailer: