Well, it is now November and my screen lock switch is still functional...
Mr Jobs and his cronies are probably getting close to the release of the non-beta version of iOS 4.2 for iPad.
The screen orientation lock function will not disappear completely, users can still lock their screens with the new iOS 4.2 multitasking bar, and swiping left to activate the feature.
Another is that iOS 4.2 beta allows users to adjust the brightness of their iPad’s screen on the fly, instead of having to exit apps and having to adjust the brightness through the iPad’s settings...this should be appreciated by most iPad owners.
Steve Jobs initially pointed to iOS 4 availability on the iPad sometime "this fall."