UPDATE 8/31: Good news for Xbox Insiders who own a TV with Dolby Vision support.

As promised last month, Insiders on the Alpha Skip Ahead and Alpha rings can now stream Netflix with Dolby Vision enhanced visuals on Xbox One S and Xbox One X, Microsoft has announced. You will need a compatible TV and a Premium Netflix subscription for it to work.

Xbox Insiders: Time to get your Xbox One @Dolby Vision on ???? https://t.co/z7ySlzFop1 — Larry Hryb (@majornelson) August 30, 2018

You can check if your TV is compatible by visiting the 4K TV Details page under Settings on your Xbox. If so, navigate to Settings > Display and sound > Video output > Video modes > Allow Dolby Vision. Then, log into your Netflix account, pick a Dolby Vision-friendly title, and enjoy the improved picture quality.

Netflix currently offers more than 400 hours of Dolby Vision content, including Altered Carbon, Stranger Things, Marvel's The Punisher, and Lost In Space. Just keep an eye out for the Dolby Vision logo.

"Dolby Vision transforms your TV experience with ultravivid picture quality — incredible brightness, contrast, and color that bring entertainment to life before your eyes," Xbox Insider Team Lead Bradley Rossetti wrote in a Thursday blog post. "When compared to a standard picture, Dolby Vision can deliver colors never seen before on a screen, incredible contrast, highlights that are up to 40 times brighter, and blacks that are 10 times darker. The result is a refined, lifelike image that will make you forget you are looking at a screen."

Original Story (7/12):
Microsoft continues to work on the feature set of the Xbox One S and Xbox One X consoles, with the latest addition being support for Dolby Vision.

Choosing a new TV in 2018 isn't exactly a simple task now that we not only have competing resolutions (1080p and 4K), but also features which can greatly enhance picture quality. Top of that list is high-dynamic-range (HDR) video, which the latest consoles support. However, there's a number of competing standards, one of which is Dolby Vision.

The most commonly heard about standard is the royalty-free HDR10, offering 10-bit color depth and peak brightness of 4,000cd/m2. Dolby Vision seeks to offer a brighter, more colorful image by offering 12-bit color depth and peak brightness of 10,000cd/m2. But as it's Dolby, it's not free of royalties which is something for manufacturers to worry about rather than consumers.

Both the PS4 and Xbox One already support HDR10, but Xbox Insiders can now access System Update 1810 Preview on their Xbox and take advantage of Dolby Vision, which in Microsoft's own words, "enables select TVs to take HDR up a notch with scene-by-scene precision and accuracy versus standard HDR which uses one setting for the entire movie/show you are watching."

It certainly counts as another feature Xbox has that PS4 doesn't, but it does come with some expensive caveats. As well as an Xbox, you'll also need a TV with support for Dolby Vision and access to content that can take advantage of it.

The range of TVs with Dolby Vision support is only going to grow, but for now LG seems to be leading the way. As for content, the easiest option looks to be a Premium Netflix subscription.