NVidia Recycles Old Products

This is not a new strategy, and other companies have already tried to increase lifetime of a product by renaming or re-branding it. In 2005, ATI renamed the Radon 8500 as Radeon 9100 to keep selling this previous generation card. Today, NVidia deiced to follow the same strategy, by re-baptizing the GeForce 8800 GS into GeForce 9600 GSO, giving potentially a new business life to an old product.
The new generation of NVidia graphic cards from the 9xxx serie are rather disappointing as they are based on the previous G9x GPU already present in the previous generation, and beside higher cores and memory frequencies, nothing really changed with the new generation. The company is most likely delaying the launch of new or innovative products till its main competitors ATI/AMD is able to come with some new products on the market.
For us, Mac users, applications are usually benefiting more from old graphic cards than last generation ones, as Apple is slow in releasing "efficient drivers" for our Macs ; so if you have Pro application, having the latest GPU does not necessarily translate in higher graphical performance levels...