PlayStation Asia has updated its blog to include the offerings for Plus in that region, and has listed Mercenary Kings as the next game to be available for the PS4. Due to how young the PS4 is and how comparatively to Vita and PS3 the library is this could also mean that Mercenary Kings will be coming to Plus for both Europe and North America. Up to this point the PS4 Plus offering for across regions has been the same.
The PS Vita and PS3 games for Europe and North America are likely to be different to what will be released in Asia, as the different territories generally offer different games each month. Of course we won’t know for sure that Mercenary Kings will be on Plus until the European and North American blogs go live with their offerings, but it’s more likely than not to be the case. The Plus update post now goes live a week before the update so expect the news tomorrow.