VR-Zone translates some further details that have emerged on French website X86-secret.com regarding Nvidia's upcoming nForce 4 chipset lineup.  For the most part, they confirm what was previously revealed in the last rumor roundup:

• nForce 4 : Standard version built with cheaper motherboard but without sacrificing performance for entry level PC. Support standard features like Four x1 PCI-E slots, Five PCI slots, eight S-ATA drives and six P-ATA drives
  
• nForce 4 Ultra : Improved version with additional functionalities like dual NVIDIA Gigabit Ethernet, NVIDIA RAID,
  SP-10 Soundstorm 2 audio. Supports S-ATA II (3GBit/s) as well as advanced firewall options.
  
• nForce 4 SLI : For the workstations and gamers supporting SLI mode. One x16 PCI-E slot and one x8 for SLI card (x16 slot)
  
• nForce 4 Pro : For servers solutions with Dual Opteron with multiprocessing capabilities up to eight way. Supports additional PCI Express HyperTransport controller with NVIDIA IO4

SLI technology, in case you forgot, is Nvidia's refreshed spin on the idea of running two video cards at once on one system, in this case up to Geforce 6 series PCI-E cards on different PCI-E slots.

The news byte mentions that initial samples for the nForce 4 are to be made available for Nvidia's partners in the motherboard arena quite soon, with the official productline announcement scheduled sometime later in September.