Apple Q3 earnings call: Tue 19 Jul 2011(source: http://investor.apple.com/results.cfm)OS X Lion release: Wed 20 Jul 2011
(source: http://en.wikipedia.org/wiki/Mac_OS_X_Lion)
Apple Q3 earnings call: Tue 24 Jul 2012
OS X Mountain Lion release: Wed 25 Jul 2012??