I cant understand the though process behind this. First destroy phones through one ui and then not even give an option to either revert or change the faulty functions like the navigation bar and the pulldown menu. Whose toddler drew your design btw.
Fortunately for me the update came a day after I purchased the phone so I didn't get time to miss anything. By all reports its a bit of a shocker and does make you wonder what hitting the update button in future is going to do to your phone.