I’m sorry to bring up this subject again, but it’s because I love Unreal and it is the engine I’d love to use for my projects.
Can we expect support in Unreal?
Hi Shohruh,
is tied to Microsoft’s UWP, and Tim Sweeney’s post (linked below) still contains the relevant information.
Cheers
Thank you for reply. One more question.
Can we integrate those Holographic APIs ourselves?
Doesn’t matter now. We decided to use Unity. Bye.
For the sake of answering the question - probably not.
Personally, I’m not sure I’m keen on working with if it’s going to be tied to UWP, because that just prevents bringing applications to other platforms 
- but at the same time we could really do with support in the nearer future.