According to Lenovo at least, (
http://shop.lenovo.com/us/ww/pdf/w520_datasheet.pdf) it should be ISV certified.
The Quadro 2000M isn't in the certified list, though, but I assume it will be soon. I wouldn't buy it until then, though, since if I was investing 1800 dollars in a mobile workstation I need to know what it will do now and not in the future.
The Quadro 2000M is a really new card, though, so it might take a month or two for them to get the drivers out- on the other hand, the W520 itself should be a bit cheaper when that time comes.
Lenovo doesn't have a good track record when it comes to certifying driver updates, though (you can't install the ones from nVidia, or at least you can't on a T510). This is visible by the fact that if you search up a certain number in the nVidia driver release notes from Lenovo you can figure out the revision of the graphics drivers from nVidia- just look at the last 5 numbers disregarding the decimal point.
So from 8.17.12.6763 we get the version of Lenovo's driver package: 267.63.
This is hardly the newest driver (newest one is 270.61).
