It won't be "official" until Friday their time, Saturday our time. As it stands it's back to the old Steemit style interface, so I do hope that more d'apps jump across so that I can upload photos properly, have a word counter, etc. and genuinely do quality posts again.
There are going to be a few teething problems, like I can't access my wallet through it because it hasn't been set up yet.
Communities are working, but I think it will take a few weeks for the dust to settle.