As usual, Apple will hold their World Wide Developer Conference every year, and without fail, they will post the videos records during the conference up for download. Although the videos are only made available for Mac Developers, but this is greatly helpful, especially those developers we did not make it to the conference itself.
I’m sure with all the videos, developers can learn more about the up coming iOS 5 and Lion OS with ease. So check out the videos from WWDC 2011 here. Videos can be either downloaded to iTunes, or stream via Safari and I’m sure you can watch them via iPad or iPhones.