In most modern systems, there are two types of storage, volatile and non-volatile memory. Volatile storage is very fast, but is expensive and requires constant power to retain data, if the power drops, the data disappears. For this reason, it's typically used as system RAM and provides the working storage for the system's processor. Non-volatile storage, which typically takes the form of a hard drive or solid-state drive, retains your data without power to the system, but it is much, much slower than typical RAM.
Today, Intel and Micron announced XPoint memory (pronounced: crosspoint). The companies are promising that XPoint is 1000x faster than the NAND flash used in today's SSDs and because the structure is simplified, they can be packed 10x denser than the chips used in SSDs today. In terms of performance, this puts XPoint somewhere between the DRAM used for system memory and the NAND flash used in SSDs. Cost for XPoint memory will be somewhere between that of NAND and DRAM as well.
This kind of advancement has real potential to move bottlenecks inside the PC, but the current PC ecosystem can't accommodate the scale of performance that Intel and Micron are promising. Current PCI-Express SSDs are already able to saturate PCI-Express, so making the storage inside a drive faster won't show a performance benefit without upgrading the drive's connection to the PC. If XPoint succeeds, we'll eventually see significant architectural changes to the PC to take advantage of the new technology, but that will take time. At first, I'd expect to see the new technology integrated in next-generation PCI-Express SSDs, but as DRAM density growth is slowing down, it's good to see new potential technologies that can scale come online to replace or supplement it.
So when will you be able to get XPoint in your PC? Intel and Micron didn't share any details about potential product integrations, but they did say that they're manufacturing now and will ship products in 2016. Given what we know about the technology, I'd expect to see this show up first on SSDs destined for the data center, but we'll likely find out more about product plans in a few weeks at the Intel Developer Forum.