That may have been thrown out in order to gauge public reaction, but changes like this don't happen overnight. A quick search doesn't show any active debate on the planning acts, and the last update took almost a year from the formal initiation of debate to enactment.
It takes a while to turn a thought bubble into developed policy, and another while to turn developed policy into functional legislation. And this is probably a good thing; I mean, what could possibly go wrong in a rushed job?