G.Skill's announced two new super-speedy DDR4 memory kits, each of which brings a marginal improvement over what the company already had available. Both products are in the G.Skill Ripjaws 4 series.
The first kit goes by the part number F4-3400C16Q-16GRKD, and as you might have already spotted, this is a 16 GB kit that runs at a frequency of 3400 MHz. Previously, G.Skill set a record for the world's fastest stock DDR4 memory, which it held at 3333 MHz. The modules run with CL16 timings.
The second kit also comes in a 16 GB flavor but "only" runs at 3200 MHz. This lower frequency has allowed G.Skill to play with the timings a little, bringing those down to a somewhat snappier CL15. Previously, the 3200 MHz Ripjaws 4 kit carried CL16 timings.
In order to be able to achieve these speeds and timings, G.Skill has selectively hand-picked the memory ICs to ensure the utmost stability. IC's lower down in the binning process simply wouldn't be able to run such frequencies without needing a voltage higher than 1.35 V. Despite this, though, the improvements are only marginal, but if you're looking for the fastest memory available, you might have to look at these.
Both kits consist of four 4 GB modules and come with a Turbulence III memory fan. They come with LED lights built in, although we'd probably end up not using them – if you've got decent airflow in your case we doubt you'll need to use more memory cooling than the standard aluminum heatsinks.
G.Skill hasn't announced availability or pricing, although you probably don't want to know how much these things will cost you, anyway.