I would also like to know. I'm inclined to think that only the iPad Pro models will qualify for the multitasking features, despite the new iPad only launching a couple of months ago.
I'm excited they didn't drop us from the new features. I was seriously considering upgrading to a Pro, and still might with a decent Best Buy discount, but if my Air 2 has all the latest features I might stick with it until the 2nd gen 10.5 or 3rd gen 12.9.