Honestly? Don't hold your breath. The reason for the shutdown is the
Disneyland Forward project, which is a massive 10-year mutli-site expansion and improvement of the property in and around the existing footprint. There's an overview here:
https://disneyexperiences.com/disneyland/disneylandforward/
If we're lucky, the infrastructure and transportation pieces are prioritized first and it's 5 years, but I wouldn't be surprised if it were more. Fingers crossed they don't decide to just get rid of them altogether, as it appears Paris has done.