When will Classic be abandoned?

I need to have a clear date as to when Classic subscribers will no longer be able to CREATE new Classic Prezis. My IT dept says that will happen sometime in 2020 because of Flash issues. As long as Classic is available, I will use it since I despise Next. So what is the PRECISE date ? I need to know so I don’t start big presentations and then after a couple of months of working on them, I can no longer finish.
Thank you.

A post was merged into an existing topic: Will Prezi Classic be shut down soon?