In any case, surely no game developer is going to make DX12 a hard requirement to run their PC games any time soon. Even today, Steam's hardware and software s

In any case, surely no game developer is going to make DX12 a hard requirement to run their PC games any time soon. Even today, Steam's hardware and software survey puts DX12-capable hardware at around 70% of their users but nearly half of those aren't running on Win10. That's after a year of Microsoft literally giving it away and it being the default OS you get preinstalled on most new PCs in stores. The pattern of adoption hasn't been entirely surprising either: a fairly rapid shift over the first six months or so after 10 came out, but then a much slower shift since then. It's going to be a long time before anyone running a modern GPU on Windows 7 can't run the latest PC games with decent results.