I’d doubt it. I’d expect ARM to be more likely, but iX isn’t biting on that either:
But if Debian 12 and OpenZFS run well on RISC-V, then there might be a fair chance of building TrueNAS for it.
Keep in mind that, at least last I checked, iX’ systems were built using commodity server hardware. So before they’d start selling anything on this architecture, there’d need to be suitable server-grade motherboards available. This looks adequate, even if there are some suboptimal design choices (and some frankly weird ad copy–installing a 10G NIC turns it into a network switch?), but it’s pricey:
But with a few minutes of Googling, that’s all I could find in a standard PC form factor. ARM is in this regard a better choice, in that there’s a selection of server-grade hardware out there using that architecture.
Keep in mind, TrueNAS is really built for the Enterprise. While it can run on lower-end gear, that’s not what it’s designed for, and that’s not what iX sells. It isn’t intended to run on a NUC, and we’d universally say that’s a bad choice of hardware. Similarly, the ${FRUIT}Pi SBCs and the like really aren’t suitable for its intended use case. You need a motherboard that will fit in a standard PC/server chassis, allow for 10GbE or faster, and have enough PCIe lanes for a SAS HBA (or lots of PCIe lanes for NVMe storage). Oh, and large amounts of RAM. AFAICT, that hardware just isn’t out there yet in RISC-V.