From my perspective as an educator, perhaps the most enticing new feature on the iPad2 is the ability to send a video signal to a projector or TV that allows others so see everything. I have missed this feature sorely when I have wanted to connect my iPad to a projector and use it to demonstrate. I wanted to show my real time actions on iPad like I would with a laptop to navigate to Web sites and model other tasks. To do this with
iPad, iPad 2, iPhone4 and iPod touch (4th gen) one will need the Apple Digital AV Adapter (sold separately). See also this engadget article. And thanks to a reader comment for the correct info that this is an iOS4.3 feature, not an isolated iPad 2 feature. It appears that apple has updated their website to explain the mirroring with the new adapter is only possible with the iPad 2. Thanks to the comment by reader Phil Mabey (see comment below).
I am also intrigued as I consider the implications of two cameras and the thinner, slightly lighter design. I will be interested to read what others find interesting as educational applications of the new iPad 2 and iOS4 new release.