… I'll take two.
SK Hynix, one of the leading producers of RAM modules, announced a single stick of DDR4 with 128GB capacity. While this is intended for the server room, I hope that we will see workstation components attempt to be compatible in the near future. It is difficult to find a board that can support more than 64GB at all, let alone twice that, per stick.
As for the typical desktop users? Let's face it, this is overkill, eight times over, generously, per stick. Web browsers are beginning to ring up the memory usage as more and more tabs are loaded simultaneously but, otherwise, there is little use for it for them.
But for those of us who are not them, this could be awesome. It is still unclear how much memory a Haswell-EX motherboard, running on an Intel X99 chipset, will support. I can assume that this stick will not be compatible… but we can always hope, right?