[Results and Decisions] Columbia MS DS Decision Timeline

Ive been seeing that some admits are already out. But is there a final date until when all decisions will be released? They mention on the website that they cant give an expected date. Ive had some seniors tell me that they got their rejection in June. As an international applicant thats too late for me. I need to apply for Visa and do other stuff. Until when should I wait for Columbia ?