Sony has warned that its European PlayStation Network (PSN) will go offline for at least 12 hours from 9 June.
The company said users would not able to log in to the service from 4:00 pm BST time on Wednesday 9 June, as new updates are being added to the network.
Sony has, however, said that any PlayStation users who log in before 4pm will be able to play online games throughout this 12-hour period.
The maintenance will affect the PSN Store as well as basic account management and creation features.
Updated content is set to include the highly-rated motorcycle stuntman game 'Joe Danger', developed by UK-based developer Hello Games.
Possibly coincidentally, 10 June is the date that 3D gaming launches on Japanese PS3s, allowing them to play the new 3D titles Super Stardust HD, Wipeout HD and Pain.
Sony's European Store adds new games and demos each Wednesday. On the 9 June, new content will go live at 12 noon BST, rather than the usual early evening release.