Frozenbyte Ltd. and Focus Home Interactive have joined forces to publish the PC/Mac retail versions in the European Union. The release date for now is Q4, with more specific dates to follow soon.
There will be a normal and a premium pack, the premium will include at least the OST made by Ari Pulkkinen and likely other goodies also.
More info on the Focus website.
The console side is published worldwide by Atlus and Frozenbyte is self publishing Steam and various other digital channels.