Today, Google announced that it's rolling out a new home page experience for YouTube on desktops and tablets. The new look was first spotted back in August, and it's rolling out starting today and should be available to everyone "soon".
The changes in the redesign are small in number, but easily noticeable. First, Google is increasing the size of video thumbnails, which should help users glean more information about videos at a glance, as well as provide higher-resolution video previews. To help accommodate the larger thumbnails, Google also removed some of the categories you'd see on the home page, such as the "From your subscriptions" section.
Other improvements are more functional, starting with a new "Add to queue" button that shows up when you place your mouse over a thumbnail, letting users create a playlist from the home screen. The queue isn't saved permanently, but the Watch Later feature is still there if you need it. Google is also making it possible to stop seeing suggestions from channels you don't care about. From the three-dot menu button next to the thumbnail, you can tell YouTube to stop recommending videos from that channel.
Finally, a more forward-looking announcement is that YouTube will be adding new ways to filter your home page, as it did on mobile devices earlier this year. Users will be able to choose from a set of recommended topics so that only videos about that topic are shown on the home page. There's no specific date for this, but Google says it's coming soon.