There is currently no waiting for add-on reviews…

For the first time in years (may be ever) the folks at AMO are caught up on add-on reviews. How long this will last, who knows? Though they are expecting for the next few days for reviews to be completed within in a few minutes (during normal ‘business hours’) of submission. They are encouraging developers to take this opportunity to make sure their add-ons have been reviewed.

Mozilla Add-ons Blog