I am guessing that the best chance, based on what I know is likely to open, could be Cabaret. Great musical that has had prior huge (at an event level???) success on Broadway, a new production that got enormous press when it opened in London and won a lot of awards, Oscar-winning lead, etc.
Of course, Redmayne’s career luster isn’t what it used to be (or maybe he won’t even be in it) and the last revival closed less than 9 years ago. So, who knows.
I do acknowledge the occasional production that came from nowhere and became an event when the reviews came out. For the old-timers, I would venture that a really good example would be A Moon for the Misbegotten with Dewhurst and Robards. Was only scheduled for a 5 week run. A somewhat obscure Eugene O’Neill play ended up being the must-see of the season. Those are pretty rare, however.