IGN gives you Acid
Metal Gear Acid that is. Or perhaps that's what Kojima takes, right before he comes up with a new game...
IGN have a preview of this much anticipated PSP title. While I'm not a particular fan of handheld gaming, Metal Gear Acid has me intrigued to say the least. I love the Metal Gear series (Just tracked down a copy of the very rare Substance for the PS2. YAY!) and I love card games. Highly interesting concept, and with Kojima at the helm, you know it's going to be something pretty special.
No release date yet, but it's hoped that it'll be a PSP launch title. Also, the US version will have wireless multiplayer, something the Japanese release lacked. Bless you, Kojima-san!