According to Crucial Memory’s promo page, they would be making DDR4 memory kits available as early as next month.
The following was mentioned on Crucial’s website:
Designed to enable the next generation of enterprise and consumer products, Crucial® DDR4 memory technology represents the future of computing. Moving beyond the outgrown limitations of DDR3 module architecture, Crucial DDR4 memory is engineered to pack more performance into your system and has the capability to double the available density per module. Crucial DDR4 modules will use up to 20% less voltage than previous technology, and will enable mainstream data rates that are at least twice as fast as DDR3 memory. With DDR4 memory in your system, get ready to process data twice as fast, load applications faster, experience quick snap responsiveness and increased ability to multitask. If you thought the tablets, ultrabooks, and desktops of today already seem fast — get ready to be blown away. The technology that enables electronics is about to get better and faster than ever before.
There’s no confirmation if there would be motherboards made to use the upcoming memory kit specification as soon as DDR4 is available. The memory company has put up an infographic on their main webpage. Chances are pretty high that other memory kit manufacturers will start bragging about their DDR4 release, but Crucial called the dibs on being the first to do so.