You can see the real-time discussion of various iPhone and related enhancements on these blogs, which covered it live:

• NYTimes
• CNET
• Gizmodo
• Wired
• gdgt 

Below are several data points released during the Steve Jobs keynote, as well as features of the new iPhone:

• 2M iPads sold to date
• iPad in 10 countries (going to 19 by July); 8.5k native iPad apps, downloaded 35 million times or 17 apps per iPad. 
• 5M books downloaded on iBooks, 22% ebook share in US; iBooks software being enhanced (i.e., note taking, view/read pdfs)
• Netflix, Zynga, Guitar Hero coming to the iPhone
• 5 billion downloads, more than $1 billion paid to developers so far

iPhone 4:

• Glass on both sides, improved display, front-facing camera, new engineering
• 78% of the pixels on the iPad 
• A4 processor; battery largest component inside -- much longer battery life 6 - 10 hours depending on activity
• 5 megapixel camera; several other enhancements (low light sensor, digital zoom)
• HD video + iMovie editing on the handset
• Video calls/chat (only via WiFi)

The new iPhone is very impressive but a significant disappointment is the the fact that at least for the immediate future AT&T in the US remains the only carrier to offer the new device. It's unclear how long that will remain the case; however Apple is limiting its market by sticking with the embattled carrier. 

Still a generous upgrade policy from AT&T and a boatload of new features should guarantee robust sales when the device becomes available on June 24, later this month.