I received mine today and it is nice and smaller than my 2015 model. One problem is that it has just one USB-c ports so I will have to get a hub. Luckily I ordered the adapters for both USB and Lightning connectors.
I tried the voice over that was supposed to make it easier to migrate and found it really annoying, so, I turned it off. It was easier to just click the continue button. The other thing I would advise is to find the migration utility on your old machine first.
Mine came the day before the last day of the range I was given. I had the same change in wording, it still took a few days to receive the MacBook Air. So far I really like it. The email program really changed though. Will have to get comfortable with that.