[algorithmsRcool]

Nope, it will be a windows only capability.

-Edit-

I should add that the purpose of them adding this capability isn't to set up a new cross-platform UI suite. It is just to lure enterprise shops to .NET core by supporting more of their .NET Framework workloads

[solarkraft]

I'm still wondering whether it would be smart for them to port WPF or UWP to all platforms. They are already decoupling their services from Windows and a UI library would be quite a flagship for them.

Then again they'd also lose the Windows vendor lock-in, which might still be more valuable to them.

Then again they could sell their development toolchain and gain developer sympathy.

[algorithmsRcool]

Well, I think it is an engineering problem. WPF is basically cemented to DirectX which only exists on Windows.