Apple has announced via press release that users who own an Apple TV can now enjoy YouTube videos as was announced by Steve Jobs last month.

In the press release Apple also said that the iPhone will also be able to access YouTube videos and this feature will be available on the launch day.

“iPhone delivers the best YouTube mobile experience by far,” said Steve Jobs, Apple’s CEO. “Now users can enjoy YouTube wherever they are—on their iPhone, on their Mac or on a widescreen TV in their living room with Apple TV.”

Users can download the free software update using Apple TV’s built-in software update feature, and then easily navigate through YouTube’s familiar video browsing categories or search for specific videos. YouTube members can also log-in to their YouTube accounts on Apple TV to view and save their favorite videos.

To achieve higher video quality and longer battery life on mobile devices, YouTube has begun encoding their videos in the advanced H.264 format, and iPhone will be the first mobile device to use the H.264-encoded videos. Over 10,000 videos will be available on June 29, and YouTube will be adding more each week until their full catalog of videos is available in the H.264 format this fall.

The combination of H.264-encoded videos plus iPhone’s built-in Wi-Fi networking, stunning 3.5 inch display, and custom YouTube application with its multi-touch user interface results in the best YouTube experience on any mobile device.

Apple is also offering a demo video of the YouTube integration on the iPhone, a YouTube icon has joined the application list on the iPhone.