Oakville, Ontario (Canada) here. Got my JB update on my TF201 on Thursday. (can't remember the time).
Did a check for updates, said an update was available. After it downloaded it reported an error (one I've seen here in other posts, can't remember which).
At first I thought I was screwed, but then I noticed a notification in the tray that said there was an update ready for installation. I pressed it, and it installed.
So far, so good.
One thing I noticed (by accident) is that if I swipe my finger up from off screen anywhere in the bottom left corner (where the Home, Back, and Running Apps buttons are) it launches Google Now.