To say that it is much improved I think is pushing expectations. Maybe a very slight decrease in price, and I doubt Apple will have to claim to fix any keyboards since this is an improved version found on the MacBook, which, by the way, has not had its keyboard "fixed".Absolutely wait.
Purchased a base nMBP 2016 8/256 and returned in a heartbeat, not because of performance (it was fast), but because I firmly believe the keyboard has a design or manufacturing flaw. Two keys did not register the strokes unless I pressed them quite hard.
In hindsight I am happy the keyboard was faulty because it gave me a reason to return it for a full refund, I believe that with only 8GB of RAM this laptop would not have worked well in 3-4 years from now.
My current machine is a MBP from 2010 with 8GB and 512GB SSD, so I have been a bit silly actually to purchase a brand new laptop in 2017 with the same amount of ram of a 7 year old one and a smaller hard disk.
I believe there will be a much improved gen 2 this year, with lower price and fixed keyboard.
I'm on the MBP 15" with touch bar, and the keyboard works flawlessly. Exceptions would be probably some poor quality control experienced by some users with squeaky keys.