The Inquirer reports Quad SLI was shown off by NVIDIA over at CeBIT last week, some manufacturers like Foxconn already presented a AMD Socket AM2 motherboard with NVIDIA Quad SLI support:
An Nvidia boy was guarding the system with his life, and the people were very interested to see these cards in action. Nvidia still doesn’t talk about the performance of the machines but it likes to show off the Formula One race. That is the only thing you can see on it so far.
When it comes to hard launches, this is the second time that Nvidia showcased the Quad SLI and it is still not ready to ship it. It naturally blames the OEMs and manufacturers but some of the spinners actually said that the system is not ready for benchmarks, at least not yet.