Lots, both.
I’d say Piano V3 still isn’t as good as Pianoteq 7, but it does have some different colors, especially the uprights. And much better tweaking options.
CS-80 V4 finally lives up to the hardware original of Vangelis fame. And listen to Steve Porcaro doing Toto’s Africa on it:
https://www.arturia.com/stories/steve-porcaro