10nm chips are now on store shelves, but probably not in the form you want. As spotted by dylan522p on Twitter, the Walmart, Amazon, and Newegg U.S. sites are listing Intel Crimson Canyon NUCs with i3-8121U CPUs, while SimplyNUC also has a section for them. These 10nm chips showed up in Chinese computers awhile ago, but this is the first listing I've seen in major U.S. retailers. Interestingly, the boxes also come with a 2GB AMD Radeon 540 GPU, as well as 8GB of LPDDR4 and a regular 1TB spinner. For reference, a similarly priced, previous generation NUC with an i5-7260U actually boosts to a higher frequency than the i3, but doesn't support DDR4L memory.