Xbox Live will be down on Tuesday, June 16, for service maintenance for up to 24 hours.
The maintenance service will check Xbox.com features, like its forums feature, to fix any irregularities.
Microsoft is using this time to prepare and upgrade the service for the “New Xbox Experience” coming soon.
New features, which were announced during E3 last week in Los Angeles, will also be added to Xbox Live such as Facebook and Twitter access, an enhanced Netflix player that will let you browse for new movies, and streaming 1080p videos over Live's upcoming, Zune Marketplace-powered video store.
The service began at 12:01 am PST and will run for up to 24 hours.