Apple has launched a new model of Apple TV, and it supports better picture quality than the previous ones.
The Apple TV 4K supports the 4K resolution, which has four times as many pixels as high definition. 4K can't be found on terrestrial television, but more broadcasters and streaming companies now produce 4K content, including Sky, BT, Netflix and Amazon.
The new Apple TV also supports HDR, which stands for high dynamic range. This enhances the difference between the light and dark parts of an image, creating a picture with more depth and that looks more lifelike.
In order to see the benefit, you'll need a TV with both 4K and HDR support.
iTunes now offers 4K films and TV shows, and they don't cost any more than the high definition versions. Even better, if you've bought something in HD, Apple will offer you the 4K version at no extra fee.
Apple also announced that the new box will support Netflix's 4K content, and Amazon's when Amazon Prime Video comes to the platform later this year.
The Apple TV app will also launch in the UK before the end of the year.
The Apple TV 4K starts at £179. It's available to pre-order from Friday, and will ship a week later, on Friday 22nd September.