Apple has announced that the company’s annual Worldwide Developers Conference will take place from 11 June 2012 to 15 June 2012 in San Francisco. Tickets cost $1,599 and sold out within the first two hours (much to the consternation of West Coast developers who woke up to discover they couldn’t attend).follow link
Option-click to Hide Apps Quickly
This trick has been available in the Mac OS for years, but many people still don't know it. If you have too many windows cluttering up your screen, you can hide specific ones easily as you work. When you're in any application, hold down the Option key and click on another app's window, on the Dock, or in the Finder to switch to that other app and simultaneously hide all the windows in the previously current app.
Apple WWDC 2012 to Take Place June 11–15 in San Francisco