New playlist interface: We've introduced a new playlist design and introduced an AutoPlay On/Off switch that controls whether you automatically go to the next video or not. When we have a robust set of videos for you to watch next, we'll default you into AutoPlay mode but you can turn it off easily.
Queue comes to search: When you search from the video page, you can now add videos to your queue. Many of you have indicated you enjoy watching and programming your 'next up' experience, so we've made it easier.
Integrated comments: The comments section now lists both text and video responses, bringing together the whole spectrum of conversation going on around a video. We'll be touching this up quite a bit in the coming weeks so keep an eye on this area and give us feedback.
We've got a bit more work to do before we'll roll this out more widely; right now, only a small percentage of users are testing the page. Until then, keep the suggestions coming by dropping a comment on this blog post or popping by our forum topic on the matter.