HERE maps branding finally comes to Windows Phone

The leaked Lumia 520 and Lumia 720 images showed a HERE Maps tile on the Start screen. More confirmation from on the coming change:

What is HERE Transit and why do I have this app?

The name of the application has changed from Nokia Transport to HERE Transit. If you have installed an update from Store lately, you can find your Maps application in the applications list under H.

How do I update to the latest HERE Maps version on my Lumia 520 and 720 phones?

If you have HERE Maps 3.2 installed on your phone, Store doesn't automatically offer an update to this version. To update from HERE Maps v3.2, you need to uninstall the old version first and then install the latest version from Store:
  1. In Apps menu, long press HERE Maps and select uninstall.
  2. Go to Store and search for HERE Maps in Nokia Collection or use the Store search command.
  3. Install the latest HERE Maps version.
HERE City Lens User Guide

Does HERE Drive support also walk navigation?

HERE Drive is designed for car navigation, but HERE Maps is designed for urban use and provides walk navigation with turn-by-turn instructions.