According to the official YouTube blog, the site has expanded their high definition player, making it official after weeks of testing new HD capabilities.
Says the blog:
"Starting today, if you click the "watch in HD" option below any HD-enabled video, the video will automatically play in widescreen – so you can find out where the hell Matt is in glorious HD, if you so wish. As part of this launch, we have created an HD Videos area where you can browse videos uploaded in the HD format. In anticipation of your questions – including how to encode your videos to take advantage of this new feature and how to avoid the dreaded "windowboxing" – we have prepared an FAQ in the Help Center."
You can find that FAQ page here: YouTube HD Faq
"Starting today, if you click the "watch in HD" option below any HD-enabled video, the video will automatically play in widescreen – so you can find out where the hell Matt is in glorious HD, if you so wish. As part of this launch, we have created an HD Videos area where you can browse videos uploaded in the HD format. In anticipation of your questions – including how to encode your videos to take advantage of this new feature and how to avoid the dreaded "windowboxing" – we have prepared an FAQ in the Help Center."
You can find that FAQ page here: YouTube HD Faq
