I think the first part may be true, but I don't believe your interview date was determined by when you submitted the application. For example, I submitted everything in August, and I got the 1/27 interview. Pretty sure interview dates were determined by region since most of the people I met were from various parts of California.
For now though, we got the weekend where we know for sure we won't hear back so let's all take a break from anxiety and relax. If people did receive denial emails, then that means for now those who haven't heard back are safe. Take solace in that