It’s a facelife similar as to what Honda did with the CBR 600, slight tweaks in the lines to make it “new and improved”.
I personally still am on the fence as to which design I like better.
As far as bike configuration is concerned, Rocket Punch is 100% right, after riding twins, I4’s and getting onto the 675 I was shocked to find out that it wasn’t at all the failure I was expecting it to be. Full range of TQ down low as if it’s a twin, and screaming demon on top end as an I4, while having the weight benefit and center mass similar to Twins and having the sound that will keep neighbors for months how can something that sounds like a Geo Metro go by their house so quick at night.