Still has the same 4-wheel independent MacPherson strut with stabilizer bar on front and Multilink with stabilizer bar in the rear. Still 4,300lbs. Still has Power rack-and-pinion with variable assist steering and EPAS power assist. Still uses SkyActive-Vehicle Dynamics with G-Vectoring Control.
Reports of "re-tuned" suspension for a "smoother and quieter ride," may have much more to do with added sound dampening material than true geometry and/or component changes/enhancements to the suspension itself. Maybe I'm wrong and maybe it rides on rails now, but the 2018 was supposed to have had suspension upgrades over the 2017 and both of them stole the corners very well as memory serves me.