Unfortunately the GTO was a temporary solution to a big problem at Pontiac (No sports cars (especially of the V-8 Powered RWD variety).
The original plan was for a new Zeta RWD platform to spawn a 07 GTO and Impala SS (or some such Chevy nameplate). Apparently the Firebird/TransAM/Camaro names are going to stay dead, something to do with the Unions and agreement they signed when then discontinued the cars.. or some such nonsense.
Well so they could spend more into building new SUVs (which are going to be as popular as Big station wagons of the 70s in the early 80s). GM North America killed any investment on the line last year. Holden though went forward with the platform. So '07 and newer Monaros and Commodores will exist, but supposed a new GTO will not. '06 will be it's last year.
They have deemed the Solstice to be enough sports car for the Pontiac image until 2009-2010 when the next generation GTO MAY be built in the US off an slimmed down version of the Holden Zeta platform.
What blows my mind is that the Zeta platform would have been a spawning ground for a new generation of RWD cars. Yet while Ford and Daimler/Chrysler are building the hottest selling cars right now in the Ford Mustang, Chrysler 300, and Dodge Charger. GM Kills the only affordable mid-size RWD platform they had in design... ???
This leaves GM with trucks and FWD cars... they only have 3 specialized RWD platforms the Cadillac Sigma and Corvette platforms (Both are not economical mass producible platforms) and of course the Kappa platform that is the base for the Solstice, Sky and GT.
The upside to this is thier is rumor of a 2007 entry level RWD car for Pontiac based on the Kappa platform. That would rock, done right (Say something in a Manta/Ascona size and wieght) and I will trade my GTO for it..