2003-10-23 Nvidia GeForce FX 5700 NV31 successor said to be NV35 cut in half (2x2 / 4x1 pipelines, 128 bit memory interface), otherwise identical. Will be superseeded next year by NV36x, which will support PCI Express in addition. Previously known as NV36. Also used in the Quadro FX 1100 chip.
2004-05-04 ATI Radeon X800 New high end graphics chip succeeding the R350/R360 based on a completely new design also known as project Loki. Was to be shown at Comdex in November-03, but was only shown to NDA-signing people on CeBIT-04 and launched to the rest of us in May. Was earlier said to support unified DX 9.0c and Pixel and Vertex Shaders 3.0, but only DirectX 9.0b is supported.
The R420 is a simplified version of the R400 (now R500) to get a new high-end chip out quicker. R420 still uses 24 bit precision (96 bit in total) but adds 3Dc compression.
Native PCI-Express support shows up in the R423 (X800 PCI-E), formely known as X880 on June 1st.
Two versions are launched: The X800 Pro includes 12 pipelines with availability now, while the X800 XT uses 16 and ships on May 21st. A low cost X800 SE with only 8 pipelines is also planned. Previously known as R420.
2004-11-XX Nvidia NV41 Successor to NV36 / NV36x, for the mid range performance or enthusiast chip sector. Supports PCI Express only.
Newer info claims it to be identical to NV40, except that only 12 pipelines are included.
The latest info indicates that this is rather a successor to NV40, with identical performace, but only for PCIe.
A notebook version called NV41M is also planned.