I'd much rather prefer A-Frame become this layer for HTML, if only for the fact that the component registry is already community driven and therefore populated.
If you don't mind wearing a Hololens all day, it orients itself by turning your entire surroundings into ~1m mesh blocks that serve as its internal map. As a bonus, you can retrieve the current mesh from the device's internal web server in order to visualize against it.
Cons: Wearing Hololens all day, spending thousands on a hobby project. :-/ Fascinating if you manage to borrow one though.
Mapbox in Unity. The API might lag behind updates to the JavaScript SDK, but I'll be damned if they didn't at least make the end-user developer experience a pleasure to work with inside the editor. So many SDK implementations in Unity are quite clearly just a layer of likely poorly implemented web calls being jammed into the editor GUI.
Regardless of if and when they are released, there is no way in hell that Apple has ditched on-face augmented reality. Inevitably the platform's goal is to get as close as possible to the user's raw attention stream (what the eyes are up to)...
Finally had to stop lurking here to share the good news... if you get the CVS app, buried within app settings is the option to go paperless. Once you do so, the registers won't even try to print a receipt which seems to confuse 10 out of 10 cashiers when they're about to ask if I want my receipt. Bonus points, receipts go directly to email.
Can also manage your prescriptions completely as well, a surprisingly easy user experience.