The ground poly will be dx10 compatible in the future?
Probably not, because we would have to create two different ground sceneries, and the DX10 would look worse anyway. As you might notice, while we advertize DX10 compatibility for JFK, we don't for Geneva, because it's made in a different way, which is more suited for a smaller airport (it's sharper than JFK, in fact, because of this).
If you think about it, not even the default scenery is fully compatible with DX10: there's a lot of ground flickering even on default airports without anything else installed, which makes it not very usable.