If they intended to fix the issues immediately, they wouldn't have come out with that formal apology. As stated in the apology letter itself, maps will improve over time and with user usage and input. In the maps application, flip up the map to where the drop pin and hybrid/satellite and all that are and there is an option for "Report a Problem". Maps relies on crowd-sourcing to find problem areas so they know where to fix. They aren't exactly going to rebuild every square inch of the application.
Google and the like have had a massive head start on Apple...they've been at this for years....don't expect them to magically fix everything in a matter of a fortnight (man I always wanted to use that word in a sentence).