A mandatory system update will go live next week on Tuesday, April 21 at 2:00 AM PDT. It has been tested with all released and in-cert GFW-LIVE games with no issues reported. Players who are logged onto GFW-LIVE will not be disconnected or otherwise affected when the update hits, unless they are on for more than 8 hours straight during the time when the update launches.

Users will have to log out of GFW-LIVE and log back in after 2 AM to see the update, which will be mandatory in order to log back onto GFW-LIVE. This will have no effect on Xbox LIVE.

The update to the Games for Windows Redistributable and Live Client for Windows incorporates:

Live Client for Windows setup has now been localized into 13 languages.

Games For Windows and Games For Windows Live updates now available via Microsoft Update.

Miscellaneous bug fixes.

Support for larger premium downloadable content packages.

Via VE3D