Apple Updates: Yosemite 10.10.1 & iOS 8.1.1
Apple has release Yosemite 10.10.1 & iOS 8.1.1 first updates since initial release.
Yosemite is available through the Software Update within the Mac App Store, while the iOS update is immediately as an over-the-air download. Apple has also updated the Apple TV software.
These updates according to Apple's release notes are mainly to address stability and performance improvements