No emails from SMU

For context, I am interested in SMU business faculty and I submitted my application on 16/3. Recently, some of my friends received their interview invites and their discovery day invites. Up till now, I haven’t receive anything and I am getting worried.

So my question is, are the emails send in batches? Also, when are the interviews usually conducted? Is there a possibility to be interviewed in late April or May and therefore not receive any email yet?