I schedule a lot of meetings (from the Leads module). Normally, all of the participants would receive a meeting invite (the Lead, other Users (my coworkers), and myself).
As of Friday (Sept 18) afternoon, I no longer receive a meeting invite. My coworkers are receiving theirs. I don't know if Leads are receiving their invites (it is rare that a Lead sends back a meeting acceptance, so I can't interpret a lack of acceptances as evidence invites aren't being sent).
I like the meeting invites being sent to me so I can add the meeting to my Outlook calendar (I like Outlook's reminders better than Zoho's).
I haven't received any meeting reminder emails since Friday, either. I find them annoying so on its own I probably won't complain about it, but they did cease at the same time as the invites being sent, so it's possible the two things are related.