Apple knew this wasn't true. They knew there was an public native SDK on the roadmap because web technologies didn't cut it.
The Stocks and Weather app were originally HTML/CSS/JS apps just like Dashboard widgets (note Steve Jobs actually describing these apps on stage as 'widgets'), but the performance just wasn't there so they got reimplented using native apis.
The Stocks and Weather app were originally HTML/CSS/JS apps just like Dashboard widgets (note Steve Jobs actually describing these apps on stage as 'widgets'), but the performance just wasn't there so they got reimplented using native apis.