Like all TrueEarth products, it should provide mesh (including elevation data), photoreal ground textures, autogen, and an additional overlay package for custom POI objects. It's definitely a replacement for SpainUHD (provided you give the Orbx scenery pack higher priority). It should be possible to use SpainUHD mesh and textures with the autogen and overlay from Orbx, but you'd be skipping half of the product :-)