I'm finding it really odd that people are praising the new keyboard. I must admit that I have only tested it in the Apple Store, but I find it terrible, the short travel feels really bad to me. Is this something that you just get used to?
Compared to other Mac keyboards? My MBA feels super squishy - it's actually uncomfortable to use now.
All in all - after about 10k words on it, I like it.
If you're curious and in need of an upgrade just buy one. If you don't like it, return it.