I personally think the arrow for the "slide to unlock" needs to be removed. It feels so damn out of place! We have all owned iPhones long enough to know to slide it
unfortunately for us we're a captive audience. apple needs to worry more about new converts to smartphones and other systems. thats where they get their boost in marketshare which they desperately need.
and while the arrow might not be necessary for us seasoned users, the previous beta where it said slide to unlock, and the arrow for control centre was right below it was definitely confusing. i've been on ios devices since ios 2 and a couple of times even i inadvertently swiped up!