Infact I think if anything we are going to see a little more movement away from it - PC developers despite the romanticised vision actually rarely have the need or desire to work as close to the metal as console requires and I fully expect to see the next iteration of the APIs in PC space move back towards a hybrid position with more of the abstraction of older API but more ability to work at a lower level if required than typical of older APIs rather than DX12 and Vulkan that forced developers to get their hands a lot more dirty even to do the basic stuff. (one of the reasons DX12 adoption has been so slow is that it is a lot more work to get results out of it and developers in general, the odd gurus aside, don't like that).
I think DX12 has done far more harm than good and has actually held gaming back.
When DX12 was announced there were plenty of predictions about the benefits but in practice we have seen very little.