I think that rule was changed in mid April, not 100%, but seems I remember reading that at some point, see belowThink there is an August portal.
Moving forward, student-athletes are expected to enter the Transfer Portal within their sport's notification-of-transfer windows, which Division I members emphasized are important for providing transparency to student-athletes and coaches for recruitment opportunities, roster management and financial aid planning. There will continue to be exceptions to the legislated transfer windows, including for the departure of a head coach or a discontinued sport. Student-athletes who plan to enroll as graduate students at their next school can enter the portal at any time during the academic year but must enter the portal prior to the conclusion of their respective sports' final transfer windows.