Let’s not forget, it’s not the society saying this its just one speaker!!
Without going back and checking again, I believe both talks that have been posted here recently were from assemblies and at least one of them was given by a "Bethel" speaker and the other by a CO or DO. As Gill pointed out, ALL talks given at the assemblies are manuscripts. These are created at Bethel.
As far as not believing this until it is in print, I agree. But, it has that certain feel about it - one that is used to "prep" the r&f for upcoming "new light." It reminds me closely of how they are already prepping the r&f for a change in doctrine to allow "the other sheep" to assume GB positions.(don't ask me what class they were!) But the way I see it in the end, any new doctrine related to the ministry will have a direct impact on the way they will continue to carry on business. That is, afterall, where most of their money gets spent on.
I don't have the latest numbers, but from two years ago, it took over a 1k hours to produce one convert. This figure jumps exponentially when you take into account children of jw's getting baptized. Then ask yourself, how many WT's and Awakes does your average jw give away at the door (or laundromats) without asking for a donation during that 1k+ hour block of time? How much money is the WTS losing because of this?
Looking at this possible end of the preaching campaign from a business perspective, it is a good plan. As some have already mentioned, this shift in procedure can really go either way. They can stop the preaching work altogether, or keep on doing it, but using a cheaper method such as distributing tracts. If they stop it, they do lose that one "verifiable" control over the r&f --- timecards. So would they come up with an alternative? How about just using informal witnessing? There are many possibilities here.
I guess we'll see what happens in a few years.