Apple has seeded the first beta of OS X Yosemite 10.10.2 this afternoon. The update, labeled build 14C68k, is available through the Update tab in the Mac App Store and the Dev Center for all registered Mac developers.
Today’s release comes just a few days after Apple officially launched 10.10.1 to the public, which featured bug fixes and Wi-Fi improvements—although some users are still complaining of Wi-Fi issues after updating.