No, the original plans, plans we have never seen and the first to be tagged SW7, were for something else, probably on Air carpark and probably by B+M. The plans we've seen from Gerst replace that coz it wasn't ready or something, those original plans are likely to be revisited in the future and may well become what will be known as SW8..
So they are building to the plans we've seen called SW7. Roughly. Because the coaster plans don't have to be exact and the groundworks suggest it is at least a little different to plan. The high points, station, and large themeing objects will be as planned though, as that is what the permission was actually for.
That, in theory with a lot of (reliably sourced) speculation, is SW7 in a nutshell.