Juli Clover, MacRumors:

Starting in iOS 11, Apple introduced support for indoor maps for select malls and airports around the world. Indoor maps have been slow to roll out, but Apple has been steadily adding additional mall and airport maps since September.

Apple today began listing indoor maps for malls and airports on its iOS 11 feature availability page, giving us a clear picture of exactly where the indoor mapping feature is available for the first time.

Here’s a link to Apple’s official iOS feature availability page. Definitely worth a minute to scroll down the page, see what categories are being tracked. Indoor maps for airports and malls are about halfway down the page.

Great resource.