The iPhone SDK recently came out. I must say that if I actually had an iPhone, I would be all over this. Now that Apple have finally released this thing, I'm really expecting great things from pro and aspiring programmers alike.
Also, towards the bottom of the iPhone Dev page, there is a heading called "iFund". Seems like people are willing to invest $100,000,000 or so into companies programing for the iPhone. I don't know too much about it, seeing as how I'm not apart of a company and all, but it looks like something worth investigating.
And finally here are some links:
The iPhone SDK Keynote
Apple Developer Connection - iPhone Dev Center