Personally, I'm really not too sure how much more they could do to the Rad City for 2020. I think the big jump was the 2018 to 2019, and any changes might be minor. Maybe an update to the display screen with a clock in it? Improvements in the seat? What ever it is, I'm not sure there is much that would make me regret my '19 purchase. My brother in law and I pitched and made one order with two bikes and got the $100 per bike discount back in August. He put over 1,000 miles on this from August til it got cold here in late October.
With the tariffs either in place or coming in the future, the margin for profit is probably not as much as you think. And with the current price cuts, that margin must be fairly thin.