Why is the Submission System still open?

According to the conference website, Oct 24th was the due date for the JIT Submissions. However, if I go the the submission system, it is still open. I can still propose sessions. What does this mean?

Correct, JIT Submissions were closed on Oct 24th. However we’ve decided to leave the submission system open till Nov 21st, just in case, some very interesting/vaulable sessions are proposed. 

We believe this would give people, who missed the deadline, an opportunity to propose a session. And if they do have something really valuable to contribute to the community, at least we have an option to consider it.

Having said that, we’ll not be obliged to review and accept those proposals. Each stage producers will have the final say for their respective stages.