Along with iOS 8.1.3, Apple released OS X Yosemite 10.10.2 on Tuesday. The update for the Mac operating system fixed a WiFi connection issue that was plaguing many users, and added support for browsing iCloud Drive content in your Time Machine backups.
Apple fixes WiFi issues, adds iCloud Drive support to Time Machine with OS X Yosemite 10.10.2
The 10.10.2 update also improved VoiceOver speech performance, fixed an issue where Spotlight would load remote email even when it was set to not do so, improved video and audio sync for Bluetooth headphones, improved webpage loading performance, and improved Safari stability.
Apple also included several security-related fixes in the Yosemite update, and they're available in a separate security update for OS X Mavericks. The security fixes address issues that could let attackers execute arbitrary code in the Bash shell, a Bluetooth driver flaw that could let attackers run code with system-level privileges, a website cache clearing issue where data could be left behind, a security flaw where attackers could use Thunderbolt-connected devices to modify your Mac's firmware, an issue where Apple ID credentials could be intercepted, and more.
Safari was also updated to version 8.0.3, and previous versions include security fixes bringing them up to 7.1.3 and 6.2.3.
OS X Yosemite 10.10.2 is a free update available through Apple's App Store app on the Mac. You can find it by clicking the Apple menu, choosing App Store, then selecting Updates.