I went to our owners' dashboard, and it indicates that Ian status is being updated on the resort status page here:
https://hub.vacationclub.com/properties/sheraton-vistana-resort/ As can be expected with Marriott's atrocious communications there is absolutely nothing about Ian currently on those pages for the resorts that they indicate are impacted (SVR, SVV, Vistana Beach Club and Vistana PGA Vacation Resort). Kind of par for the course for Marriott - just pretend to communicate.
But check back later on the link above and perhaps they will post something there eventually.
I'm curious to know as well, since we own there. Repairs that are not covered by insurance will be charged back to the owners.