Wipeout HD is Wipeout ps3.
As for the merger of Sony Liverpool and Evolution, it was never a rumor.
I'm not sure about the details, but I think their merger was a purely economical one. Basically cost cutting by housing both studios in the same building, allowing them to share resources, etc. I believe they're still two distinct studios in terms of production, much like how BigBig are still doing their own thing.










