Google has announced that its YouTube video-sharing site is going 1080p. It's available to test right now on some videos, but will be going live for all users at some point next week. Until then, you can see some 1080p content by appending "&fmt=37" to the end of the URL.
Google says: "As resolution of consumer cameras increases, we want to make sure YouTube is the best home on the web to showcase your content. For viewers with big monitors and a fast computer, try switching to 1080p to get the most out of the fullscreen experience".
YouTube has accepted 1080p uploads for some time, but downscales them to 720p in the processing phase of the upload. Luckily, however, the originals are stored, so YouTube will be re-encoding and converting any existing 1080p videos in its database.
When the feature goes live for all users, we'll update this post.