YouTube began rolling out with a major new version today, making the leap to v12. You might be expecting some big features when the big number goes up by one, but this update doesn't appear to be packing anything too exceptional. There's a fix for an obnoxious interface issue, but that's about it for changes in the live interface. What's more interesting are a few upcoming items visible through the lens of a teardown. There are hints of a new video preview feature, listings for upcoming ticketed events, and even a few nuggets for the long-awaited Quick Seek and live broadcasting features.