Think again...
Do you wonder why there are very few S90s on the roads in the UK? Well, now that they are built in China, the lead time is a little long.
In the first week of April our fleet manager placed an order for my new S90 and asked for a delivery date... mid OCTOBER! That's - count them - 28 weeks!!
May I suggest that, given the age of the demographic this car is appealing to, there may be a few people who will no longer have a valid licence by the time the car is on their drive. It's also possible that a few people will actually forget they ordered the car and go and get a Mondeo instead (delivery in 12-14 weeks).
I know China is a long way away but really?

 

2 great reasons to wait:
1) It is a new plant producing their first car
2) workers can practice getting perfect on your car, while they build ones for other markets.
Then again, I have no idea the ratio between R-hand and L-hand drive S90s.

 

I went ahead an bought an S90 T6 Inscription, list price of $67,775 (but $10,500 discount). It had a build date of Sept 2016 (bought June 2017). It is awesome. I was going to wait and buy a 2018, with OSD, in exactly the colors and options I wanted. I did not get my preferred exterior color, but I am really digging my Onyx Black. I did not even know that Polestar Optimized was an option. I have it. It is so nice to have. I rented for 10 days, this May, a T5 Momentum, and decided it was as long as I wanted (the 2018 is 4.5" longer.) That is why I searched dealer inventory all over California, OR, and WA. Eventually, I was offered a whopping $10,000 off a car with every option I wanted, and some I did not know I would come to really love. Volvo is having a SUMMER sale on S90s and XC60s, due to the 2018 models of these substantial changes. Good luck with whatever you do.