I undocked today to sort out my Myrmidon's new drone layout and there was a hostile Prophecy on the undock. I kept an eye on him while I did my business but as he was not yellow boxing me I was not worried.
Then I was in half armour. WTF?!?!
Turns out there was also a hostile Tornado 50 klicks off and he was targeting me. Fortunately I docked and was safe.
I did some checking and saw that my overview settings had new check boxes for the Attack Battlecruisers that Tier 3 battlecruisers have been rechristened as, but it defaults to unchecked.
I didn't lose anything, CCP, but I bet sure as hell someone did.
Remember to update all your tabs' settings, not just your current on.