As with any show a relaunch is a new production so there’s never a guarantee that any or some of the folks on the current tour would be employed by a new production at all. Ive not liked a number of productions but I’d never wish a show to close.
But it is closing in 2020 in Toronto.
I’m sure it’ll be back on the road again in a few years either in its original form, this current one (which I’m sure many have enjoyed even if you did not) or another form entirely.