My take is that this does signify the start of fully vaccinated people no longer needing a COVID test to enter St. Maarten. Although it doesn't say that specifically, this appears very similar to what several European countries are doing with the QR code system. Spain, for example no longer requires any type of COVID test for vaccinated individuals as long as you can produce proof of vaccination showing you are post 14 days from your second dose (or you have a doctor's statement indicating you had COVID and recovered). The only other requirement they have is downloading a 'health control form' that asks some basic questions about who you are, where you're form, where you're staying, etc. You fill out that form online, send it in, and they e-mail you a document that contains a QR code that gets scanned when you arrive in Spain. You show this document at the airport of departure before you board. Hopefully, this is exactly what SXM is doing in an attempt to open up tourism.