Apple has announced that the next version of OS X will have a new feature called Spoken Interface.
From Apple’s Web site:
The spoken interface is a fully integrated, built-in enhancement of the Mac OS X Aqua user interface making it an additional and equal way of accessing the Macintosh. It reads aloud the contents of documents like Web pages, Mail messages, and word processing files; provides a comprehensive audible description of your workspace and all the activities taking place on your computer; and includes a rich set of keyboard commands that allow you to navigate the Mac OS X interface and interact with application and system controls.
What’s cool about this, is that it will be built-in to the OS, not an afterthought. This is a great addition to the OS and once again shows why OS X is the best OS around.