It updated ok for me. I restarted twice during the update and both times instead of just restarting it crashed and said "there was an error installing" but that always happens with my setup. And everything always turns out fine, it just has that weird quirk. The only apps I have that are affected by the removal of 32bit compatibility are a handful of old steam games. Otherwise, everything is fine. Also, they removed the Dashboard, so I guess I'll use the calculator in the notification center or get a proper app for that.