yeah.. i've been seeing that warning since last week.. I was hoping they'd keep it on for longer.. Now i'm struggling to get used to the new interface.. it's prettier and all, I just need to find my way around.. I'll miss that old interface..
I haven't used the new interface at all.. I was expecting for Google to get rid of the old one, but i thought it would take longer...
The new version gives you more information at a first glance, but you have to click a little bit more to get details like keywords, landing pages and so on. The the new interface is definitely better.