Apple has put up first banner for the OS X 10.10, the banner features Yosemite National Park. It is expected that Apple has tons of new features and a complete redesigned UI in the pipeline for the OS X 10.10. Apple is expected to reveal the latest OS X during the WWDC 2014 conference.
It has been discovered previously that Apple might name the next OS X Yosemite.
Consomac notes that a pair of companies going by the names of Yosemite Research LLC and Coast Research LLC applied for trademarks on several California-related terms in the category of computer software on the same day back in early December. The terms for which the companies are seeking trademark protection include Yosemite, Redwood, and Mammoth(via Yosemite Research), and California, Big Sur, and Pacific (via Coast Research).