LAST ITEMS VIEWED BUTTON:
The new location of the 'last items' button (the one that gives you clickable links to the last 10 records you viewed) - it used to be centered off to the left on the screen, now its located at the bottom right of your screen:
RECORD HISTORY AND UPCOMING ACTIONS
This area received a really nice make-over! When viewing a record, you can now access this information in the new left nav panel, by clicking Timeline.