There's not much to say. Everything's been moved from exactly what the tracker provides, to a nicer JSON encoding.
We now get an array of games. They all have their own keys/values for different things.
This can be found at tracker.php. You can add filters, such as to see only D2 games on 0.56.0, go to tracker.php?game=d2&version=0.56.0.
Of course, this only works if there are any games. Durp.
If you have any questions, you can get a hold of me.