Nvidia may be launching the G84 and G86 in mid-April according to an on-line report.
After deciding to skip CeBIT, Nvidia has time to polish its drivers even more before launching the new products - not to mention allowing time for DX10 games to appear on the market.
The G86 will apparently have 64 shaders, half the number that the top of the line G80 has; and is expected to be clocked at up to 700MHz with up to 1GHz DDR (2GHz data rate). A 600MHz/1400MHz data rate GT version will also apparently be available.
The low cost G84 will come with 48 shaders, and will be spec'ed at lower core and memory clocks - 450MHz core and 800MHz DDR2 are numbers being bandied on the net - however it should sell at less than $100.