When will Cross Progression be added for Xbox to PC?

Issonex

I've been playing DBD for a good while now and I've unlocked/bought many cosmetics and characters using my Xbox, but recently I've started using a PC more and wanted to make that my main gaming source. However I've been disappointed to find out that cross progression is not available for this. I really don't want to restart all my progress.

So my question is, when will this be added? or is there no plans in the making for this?