I was in the same boat 2 weeks ago. Wanted to wait for the new apple keynote, but there was an amazing offer here at a local retailer for the 13 MBA base for 799 euros (200 euros off normal price). I decided to buy it, since it's gonna be used as a secondary machine in the couch, therefore I wanted to spend as little as possible. MB is 1200 euros here, so there was a huge difference.
Tried the MB and felt too small for my use: web surfing, writing Word documents, watching videos, etc. a 12 inch screen is too small to do any real work.
So far I'm really really happy. Battery life is impressive (I get 2 days of use without recharging), screen is OK (not as bad as I thought it would be. At a normal distance it looks decent enough), boots up in 8 seconds, great trackpad + keyboard, USB 3.0 ports, 720P webcam (which MB lacks), great performance, etc.
It's a great computer for 799 euros. Didn't want to pay 999 euros, the normal price.
I couldn't pass the offer. I don't really need Skylake or whatever the new Air gets. I doubt it will get a new screen (maybe 1080P?). Price was the deciding factor in my case.