Come on guys, rides and shows are treated differently than side stage acts and meet & greets. Comparing Duffy the Bear or Mulch, Sweat, & Shears to something like JTA is sort of silly. Disney isn't going to make a public confirmation if the Dapper Dans are going on a month long hiatus. And the only Meet & Greets that would get any type of forewarning are the ones that can be fast passed.
JTA on the other hand is listed as a primary show for the parks. So yes, we can expect an "official" (as in, not just coming from a CM) announcement from Disney in regards to it.
The amount of assumption that floats around in the vacuum of specific knowledge is sort of nuts. It was back in May or June that Dusney forgot to put out a January Calendar with EMH hours on it, and so the board had several folks automatically jump to the conclusion that they were eliminating EMH. It wasn't until a few weeks later when Disney got the proper calendar released that people backed down from their wild assumptions.
In this case, until Disney makes an announcement in regards to JTA, it is *not* OFFICIALLY confirmed.