The languages available for PS4 versions, like PC versions, depend on the region in which you buy the game. So buying in the US has different languages available than buying in the UK. I am not aware of any planned language packs, but I will check with the studio to confirm.
Well I'm from Germany and I'm fine with the german voice-over, but it would be nice to have the option to switch between the regional (in my case german) and the english language.
But this applies for me only if I acutally get the ps4 console, as I am quite unsure at the moment what to do and my PC is rather weak for the latest and upcoming games