G.Skill has announced the addition of 2133MHz memory to its line of DDR3 Ripjaws SO-DIMM memory modules. The modules operate at 1.35V and are targeted at laptop users, specifically those users with Intel Haswell based systems. The new memory will be available in a 4x2GB configuration and operates at Cas Latency 11. The new Ripjaws are plug and play with all current systems and won't require any modifications to the BIOS of your system to operate at full speed.
Source: Press Release