Looks Like YouTube Is Going Widescreen

While perusing YouTube last night, I noticed the thumbnails for all the YouTube videos had all of a sudden switched from the regular standard dimensions to more of a widescreen size. You can see the change in the screenshot, something Gizmodo noticed, too.
While the rest of the interface hasn’t really changed to take advantage of the shorter thumbnails, and these are widescreen thumbnails of non-widescreen videos, it would seem to indicate that YouTube is finally looking at doing actual widescreen, especially considering devices, like the iPhone, which view YouTube videos on widescreens. It would make sense for YouTube to finally get the player to fit the videos, and not waste space on black bars.
Oh, and when did YouTube start letting you do this:

Original post by Nathan Weinberg