Official: iPhone, iPod touch SDK in February 2008
The iPhone SDK announcement, an open letter from Steve jobs:
This is truly monumental. Will they open it up for other development as well? Nintendo DS ports perhaps? A targeted 10 million user base would put Apple as a contender in the portable gaming market, at least a firm number 3. Begs the question whether Apple will be opening up their more lenient platforms on hacking to legitimate development… Apple TV anyone?