Never going to happen.
The 1.6 will be deleted from all vw engines, IMO, its old technology.
Also The idea of the 1.4 TSI engines is to give the best of both worlds.
Fuel enconemy around town and the power when needed, supercharger.
The will be no point in VW putting in a 2.0 Tsi engine, if anything they will give the following options.
1.4 tsi 140
1.4 tsi 170
2.0 tdi 140
2.0 tdi 170
2.0 fsi 200 bhp ( the one in the gti).
and possibly the new upgrade old 3.2 ( r32) engine to the new 3.6 ( r36) petrol engine.
But its all specultion cause until a few weeks before launch no one can be possitive.