The only way they will say another Armageddon Date is if they are so totally desperate to retain members and get their money that they think it is necessary.
Having said that, I am confident that such a time of desperation will come.
I think they will shoot for 2034 eventually. They have floated the idea so often to gauge reactions, mentioning the 120 years of Noah's days before the flood in various articles where they go on to mention the last days in comparison.