I actually like the new Volvo S90 much better. Especially the interior.
For 2017, the base engine in the US will be a 2.0 Liter with 241HP and a 9 speed auto.
As you can see above, a plug-in version will also be offered soon.
The current model offers a diesel as the base model in the US. Priced at $52 650.
Other wise you can get a V6 for $53 100.
So basically, for 2017, the new 2.0 Liter replaces the V6. (But I bet it won't be cheaper...)