Yea they did. Because the last round of acceptances went out on January 25th, and those ppl have 15 days to pay a deposit and secure a spot, their deadline was up yesterday. That means that they would know how many seats they have available by now and they can go on and send out more acceptances accordingly.
I received an acceptance January 25th and I didn't have to have my first deposit in until February 24. I think you are thinking that was the 3rd round of acceptances. It was only the second so the people accepted on the 25th have 30 days to send in their deposits. Hope that helps and good luck!