Alongside iOS 7 Apple unveiled Mac OS X 10.9 Mavericks with a lot of new features at WWDC 2013. Apple also released OS X Mavericks Developer Preview 1 which is available for download only for Apple registered developers.
OS X Mavericks New Features
- Tags to organize files
- Multiple displays
- Notifications
- Use AirPlay devices
- Updated Safari
- iBooks for Mac
- Maps for Mac
- Calendar with new look
- iCloud Keychain
- Finder Tabs
- OS X Server and many more
If you are an enrolled Apple developer then you can download Mac OS X 10.9 Mavericks Developer Preview 1 directly from Apple.
Mac OS X Mavericks public release is expected in this fall.
See also:
iOS 7 New Features
iOS 7 Beta 1 Released to Developers
iOS 7 Compatibility and Availability