So, whenever the BVI does finally announce the requirements for tourists to come once it reopens, what will be required?

Looking at what has happened in St. Maarten, it has been a sh*t show since they reopened, with constant changes as to what is required. Hopefully whenever the BVI makes their announcement, they will stick with what the requirements are, and not change them every week, as SXM seems to do.
HERE

is a link to what is currently required for SXM. Note that, as of today, they are probably going to REQUIRE Covid insurance, at a cost of approximately $70 per person, per week.