What it is: Steve Jobs calls Dashboard "a huge hit" for Apple since its introduction with OS X 10.4, and he's got the numbers to prove it - there are more than 3,000 widgets floating around out there that you can install on OS X 's hidden layer, accessible with just the push of the F12 key.
The major changes to Leopard's version of Dashboard include Web Clip, actually a button in Safari that lets you turn web pages into widgets, and Dashcode, a development tool aimed at would-be widget makers. Dashboard will also include .Mac synching, making it easier to transfer widgets from one Mac to another.
What's changed: Very little since las August. Jobs spent most of his WWDC 2007 keynote recapping the Web Clip and Dashcode features. However, one new detail did come out of that presentation: Apple is adding a movie widget that generates a listing of movies playing in local theaters and their show times; it also allows you to play trailers for current releases and coming attractions.BRIAN CHEN AND PHILIP MICHAELS