Yes, the regulations have been in place for some time. However, the speed zones are subject to change. "For a period of 15 days after a whale is detected, mariners are encouraged to avoid these areas or reduce speeds to 10 knots or less while transiting through these areas."
https://www.fisheries.noaa.gov/national/endangered-species-conservation/reducing-vessel-strikes-north-atlantic-right-whales#right-whale-slow-zones and-dynamic-management-areas
IOW, you cannot predict more when or where these zones might affect your cruise.