This flight is BRU-JFK operated by SN. They're probably unexpectedly down an A330 and think their JFK-bound pax can be rebooked on other flights, as there are far more rebooking options TATL than to Africa (where most of their longhaul fleet is deployed to). If your flight does get canceled, you can ask to be rebooked onto UA's BRU-EWR nonstop if there are seats available; if not, there are several one-stop options that will get you to NYC on the same day.