What I don't get is way are Lexus launching it so late, very strange, It should be out this summer/autumn not 2005, Plus once people see the new model the sales of the current GS will just drop, Usually car companies keep launch dates near when the old model goes out of production but this is big amount of time between an old model ending production and new model introduction, very odd.
My guess is that maybe Toyota Japan are putting together lots of new models to launch in Japan in 2005 when the Lexus brand name is used in Japan and the GS/Aristo model and maybe the next generation IS/Altezza and maybe other new Lexus models (revised SC, LX/LC100 and RX Hybrid ?!? ) will launch in 2005 all at the same time in Japan for a grand launch of the Lexus brand.