The Sony press event is expect to start at 5:30 pm BST, with PSN to be down between 5:00 pm and 7:00 pm BST. We could see the PSP App Store added once it chugs along again.
Sony will be talking up the new service for the PlayStation Portable at the conference later today, which will sell games and applications for €1, €2 or €5. Maybe we'll get some new firmware while they're at it...?
Source: Eurogamer