What changed with the update?

They installed a new coffee machine and a doughnut counter

Considering it was expected to take 2h+, while it was instantaneous, I'm more prone to think they actually didn't manage to perform the upgrade, but had to roll-back to the previous (current) version of the site. So I'd expect another maintenance/upgrade warning soon. Like, the next days or the next weekend.

Just my opinion. I've some little experience with web-apps deployment (nothing as big as SW, of course); things don't go smooth all the time.

They didn't do any updates, it was server maintenance

They should make this sight more interesting though. Like when you hit a certain amount of best answers you get a free gift or when you hit a certain limit of answering questions your profile changes colour. Okay this is just wishful thinking but wouldn't it be fun.

It was almost instantaneous from this side of things.

More adds

It was server stuff, not features :)

App can b installed

What update ?