I think you look at the wrong date. Sure, the 1.7.0 beta was released long ago but the beta is just another test branch which has the added feature to be accessible by the community. For the "regular" player a patch only counts when it comes to the live version because this is the version each casual will play. The beta is again something that is only made for more engaged players where they can find bugs and report them(in the Forum which most players will never see). So for the casuals this patch effectively just released 10 Days ago, the update came I think 4 days ago or something. So the distance between this two dates are only 6 days or so of which 2 were a weekend. Sure, it could go faster then 3-4 Work days but it is still in an acceptable range in my opinion.