The PlayStation Premiere event in Tokyo is in full swing and news is coming thick and fast. The latest news is that Konami has announced an expansion for the PSP title Metal Gear Solid Portable Ops. Focused on online play, the game will feature new levels and characters, as well as a new single player "Infinity mode". Not much more information regarding the gameplay has been released, however the price of the expansion will be 2,400 yen on its own, or 4,300 yen in a double pack with the original game.

The expansion will be released in Japan on the 20th of September, with no word yet on an American/European release. We're intrigued and cannot wait to have a look at how this expansion works out. Hopefully it'll satisfy our Metal Gear Solid appetites until MGS4 comes out in early '08. If the expansion reaches the English speaking world before then, that is.

Check out IGN for some more screenshots.