I'm still writing up the interview that I did with them (Tom Olson and Neil Trevett) on Friday, after the initial post was published, but they do intend to merge OpenCL into Vulkan.

One thing they did want me to make clear, though, is that this is an OpenCL decision. Vulkan's roadmap isn't changing. While I'll elaborate in the follow-up post, it's to move OpenCL more low-level and abstract (ex: as I said above, FP32 makes no sense for many DSPs or deep-learning accelerators).