Google has promised this already, and it should be out relatively soon. It's not clear what all will be in it, though.

Apple Maps is a regression in certain areas (public transit, as noted above), and advances others (the turn-by-turn experience), so it's a mixed bag.

At the end of the day, most of these things are reconciled through the app ecosystem: if you are heavily dependent on public transit, Google and other app providers support you well. If you're a driver, Apple and TomTom provide worthy solutions. And so on with walking and biking directions. We, as consumer, get choices and it's relatively easy to switch between them.