Key announced features:
- Every user gets 5GB of space for backup of data and files for free. Backups automatically occur on a daily basis.
- iCloud stored files are accessible from any compatible device (Macs, iPads, iPhones, iPod touch)
- Content acquired through iTunes will be accessible via the iCloud. Rather than storing it there, it will access that content from the iTunes archive for streaming or download
- Apple also announced iMatch, which will give similar access to music not acquired from iTunes. But rather than just storing those music files, it matches titles against those in the iTunes library, and streams or downloads from there. iMatch will require a $25 a year fee, but with no limit on the number of music files matched, and can be used on up to 10 devices.
- iTunes and iMatch content will not count as part of the 5GB free space
- Integration with iOS and OS X apps, so that data added or updated on one device will automatically be shared with other devices. Third party apps will be able to store and share files through API access
- Photos can be uploaded to iCloud for sharing with other devices (Photostream), and will be automatically stored on Apple servers for 30 days.
- Integration with iWork files, with auto-save of files, both while you're working on them and in finished versions.
Apple's iCloud service should be available this fall.
Sources: "This is iCloud" Gizmodo (along with linked Gizmodo reports)
"WWDC: Industry speaks on Apple's iCloud post-PC attack" Computerworld
Apple's iCloud site