I see a link for a new Ad Preview Tool.
What I noticed as new was that instead of typing in the Google domain, you get the list of all of them which I found bit annoying as it took me some time to find the domain for UK for example.
Also the interface prompts you to sign in, in order to give you information about your ads. After logging with MCC email ads were still not recognized so I'm guessing one has to use the email that is directly associated with the account from which an ad is running.
The location (country) list is now all in alphabetical order.