If I were Disney, I'm not sure I would be talking to them at all.
We know one side isn't bargaining in good faith or based on reality and actual facts. So, what's the use in negotiating with them?
That doesn't mean they're doing nothing. In fact, I would also bet they're doing many many different things all along different lines. From at one end preparing to no longer need to pay RCID taxes and the impacts that will have on services and project priority. To at the other end setting up a super pac designed to get a new governor that's more business friendly and less concerned with culture wars. Plus 20 other options in between those two extremes. The one thing common to all those actions is that there's no reason to be the first to act today and no reason to execute any of them immediately. Which means, we're not going to hear any actions from Disney until they have to take one.
Secret negotiating meetings are hard to keep secret. They would probably come out in news someplace. Taking no public action is much easier to keep secret. Then, when it's time, they'll take all the action rapidly, all at the same time.
Depending on the plan they favor, that could be September/October or it could be right before the change date.