it's hard to tell for now if an update to the XIM Edge would be able to enable PS4 support. even if it is possible, i have no idea, it may be the case that the functionally is not added and instead only a new XIM (XIM4?) does the job.
bottom line you need to wait until Christmas to know, in the very least. be patient for the next 9 months and you answer shall be born eventually.
unless OBsIV buys a F'ing dev kit, which imho would be a massive waste of money but no one should judge tastes xD