As Google I/O 2012 rolls along, the YouTube team is updating its Android app to v4.0 with a load of new features, but you'll need at least Android 3.2 to take advantage of them (at least for now, see below). Available in 47 countries, the new app brings a brand new UI with support for channels that reflects the redesign rolled out on the website last year (not the circle-centric look that it is testing with a select few), and even more notably, can precache videos from your favorite channels for offline viewing lat
