This may or may not be DMCV related but it has been making the rounds on DMC related communities so it's worth posting here.
The user who posted this wishes to remain anonymous but they contacted me to share this information.
Apparently there's a company called Player Research located in Brighton, UK that is currently taking in players to test a new game. Normally it's for standard mobile and console type game but this new game has a peculiar type of games on the list:
The list of games is interesting because it lists DMC, Bayonetta, God of War and Infinite Blade on there along with other action/adventure games. Based on the leaks, this could very much point to DMCV. Note that Capcom is not really know for playtesting their games here so take this with a MASSIVE grain of salt.
Also if you are in the Brighton, UK area… heads up for this.