I can understand if FQ aren't able to give an ETA, but some kind of communication would really be appreciated.
Here's an example of how they do things during an outage at DreamHost. They have a separate Status domain, with timestamped updates roughly every hour, even if it's just to say "our Engineers need more time, we'll update you again in an hour":
https://www.dreamhoststatus.com/page...26303142000510
Not that I'm actually recommending DH, I've found email can be flaky over there & pages regularly timeout for site visitors. But I do like how detailed their Status updates can be.