I've been driving myself nuts knowing that the SM951 is available to OEMS but not yet sold on the "public" market for consumers. So I set out to find all of the different OEMs and Samsung Retailers in the USA and found one called AVnet. They currently don't have the drive in stock ONLY because they don't make a habit of carrying OEM items in regular quantities, as OEMs tend to purchase those in bulk, or pre-ordered sets for products made to a certain quote. So the link on the website says "16 week factory lead time" but that is only an estimated time limit for production, which obviously varies depending on the order size and priority. I called the sales representatives on the phone and they confirmed to me that I CAN IN FACT order it, and that Samsung would manufacture it, and then AVnet would ship it to my house! :D
These guys are out of Utah and seem to be a really great company. Here is the link, and here are all of the prices:
http://avnetexpress.avnet.com/store/em/EMController/Storage/Solid-State-Storage/_/N-4294881518%20100703?Nn=50&action=products&cat=1&catalogId=500201&cutTape=&inStock=&langId=-1&myCatalog=&npi=&proto=®ionalStock=&rohs=&searchClick=&storeId=500201&term=&topSellers=
256GB NVME SSD SM951 - 239.77 Part# -
MZHPV256HDGL-00000512GB NVME SSD SM951 - 464.41 Part# -
MZHPV512HDGL-00000 So if you don't want to settle for "LAST GEN" XP941


the SM951 is within your grasp! If you do order one, let us all know how it goes, and keep us posted on delivery and possible benchmarks! I'll try to purchase mine around Christmas. Good luck!