TechPowerUp found details about G.Skill's upcoming RipjawsZ quad-channel DDR3 memory kits for Intel's Sandy Bridge-E processors, you can check it out over here.
RipjawsZ will make use of a new, slightly taller than standard heatspreader design, and will be available in at least two color options - black and red. Some of the kits will consist of just modules, while some will also pack Turbulence II air-coolers that use two fans. In all there are two basic types of modules: ZL, ZH; among these ZH provides the best timings for the frequencies it offers. These modules will be available in a variety of speeds: DDR3-1333, DDR3-1600, DDR3-1866, DDR3-2133, and DDR3-2400. Modules with speeds of up to DDR3-1866 make do with 1.5V DRAM voltage, DDR3-2133 needs 1.60V, while some higher speed modules need up to 1.65V. These kits are available in a variety of capacities - 8 GB (4 x 2 GB), 16 GB (4 x 4 GB), 32 GB (4 x 8 GB), and 64 GB (probably 8 x 8 GB). These modules will be Intel eXtreme Memory Profile (XMP) revision 1.3 compliant.