There are rumors that Google will be updating the desktop version of Google Maps very soon (and will probably be announced at Google I/O). Looking at the screenshots it appears to be visually similar to Google Maps on iOS, which makes me think: will Google Maps on iOS get this same look also in a few days?
I think so. Google is slowly making all of their products have the same card based UI, no matter the platform. Google Maps has no reason to be an exception.