This update only applies to universities that choose to expire future student accounts after a certain time period. If you're not sure whether you expire student accounts or not, you can find the setting under Admin > Settings > Student approvals.
With this update, StudyStays now retains more data about students after their account expires. Students with expired accounts still won't be able to sign in, but you can now search for and view expired accounts through admin and re-activate them if you need to.
Also, reports on student registrations will now be more accurate as the expired accounts can be counted.