Photos: Apple's WWDC event Summary: Tim Cook takes the stage at WWDC to reveal his Apple's latest secrets. By Andy Smith | June 11, 2012 -- 10:28 GMT (03:28 PDT) Previous | Next Image 17 of 22 OS X Mountain Lion will be available in July for $19.99. Topic: Apple Kick off your day with ZDNet's daily email newsletter. It's the freshest tech news and opinion, served hot. Get it.