OS X 10.10.2

Mac OS X 10.10.2 was an update to Mac OS X 10.10 released on January 27, 2015. It has the following features:
 * Added USB-C support.
 * Resolves an issue that might cause Wi-Fi to disconnect
 * Resolves an issue that might cause web pages to load slowly
 * Fixes an issue that could cause Spotlight to load remote email content when this preference is disabled in Mail
 * Improves audio and video sync when using Bluetooth headphones
 * Adds the ability to browse iCloud Drive in Time Machine
 * Improves VoiceOver speech performance
 * Resolves an issue that could cause VoiceOver to echo characters when entering text on a web page
 * Addresses an issue that could cause the input method to switch languages unexpectedly
 * Improves stability and security in Safari

Enterprise content
For enterprise customers, this update:

meeting might not be notified when someone accepts an invitation using Calendar
 * Improves performance for browsing DFS shares in the Finder
 * Fixes an issue where certain Calendar invitations could be displayed at the incorrect time
 * Fixes an issue for Microsoft Exchange accounts where the organizer of a
 * Addresses an issue where Safari could continually prompt for credentials when accessing a site protected by NTLM authentication
 * Adds the ability to set "Out of Office" reply dates for Microsoft Exchange accounts in Mail

Security content

 * For detailed information about the security content of this update, see Apple security updates.