on my screen it says the update was posted today and my post was posted yesterday, i will show you:

NOTE: The only editing done to this picture is singling out the posts
You're not listening.
You're still comparing the time when you submitted your post to the time the add-on got approved.
You're not comparing it to the time the update was submitted.
When I update an add-on I submit the update to RTB. The update is in effect for all downloads after that point, but a skull and crossbones warns people it hasn't been checked yet. The mods review it and when everything is ok they give it the OK, the skull and crossbones go away, and everybody who has the add-on gets the update notification, and the topic gets bumped.

These screenshots are from the same minute.
Circled in
red is when things were
submitted.Circled in
blue is when the update got
approved.