http://gizmodo.com/5520164/this-is-apples-next-iphone
I really like how it looks. MicroSIM means you can't just upgrade from the iPhone 3GS :-( More comments and pictures here:
http://www.engadget.com/2010/04/19/apples-4th-generation-iphone-revealed/
http://www.engadget.com/2010/04/17/iphone-4g-is-this-it/
http://www.engadget.com/2010/04/18/iphone-4g-proof/
http://daringfireball.net/linked/2010/04/18/engadget-iphone
http://daringfireball.net/linked/2010/04/18/apple-ceramic-patent