Preview at WWDC likely in June, followed by September launch.
iPad Promotional Video and Images Show Properly-Displayed Flash Content
Screenshot from iPad media event presentation
9 to 5 Mac noticed that demonstrations of Web browsing in Apple's iPad promotional video reveal properly loading Flash content on similar Web pages, suggesting either that the iPad device used in the video supports Flash or that Apple has manipulated the promotional video in order to hide the fact that the iPad does not support Flash.
iPad promotional video showing Flash content (9 to 5 Mac)
AppleInsider followed up with a similar analysis also showing a promotional image of the iPad on Apple's site displaying Flash content from The New York Times. The newspaper's The 31 Places to Go in 2010 feature includes a Flash-based slideshow that displays properly on a Mac and in the iPad promotional rendering, but not on an iPhone, which lacks Flash capabilities as the iPad did during Wednesday's presentation and in the media hands-on that followed.
Portion of Apple iPad promotional image showing Flash content