There's no indication of an exact release date just yet, but word just dropped on the official PlayStation blog that the PSP will be getting a boost to firmware version 4.00 "soon." That'll bring with it the addition of Google search directly form the XMB interface, which Sony says "replicates the Google Internet search experience." Apart from that somewhat notable upgrade, the only other new feature they're talking about at the moment is the ability to change the viewing speed during playback of videos stored on a Memory Stick. Not exactly the upgrade we would have guessed for a milestone like 4.00, but we can always hope Sony has a couple of surprises up its sleeve.