I know the game installs with the games folders quite literally named "castlevaniatest" but I imagine that was because this was a small test, probably a beta/server test. If they wanted to avoid issues with Konami and do not have the rights to the IP, having the game install itself with such a name is not a good look.
Additionally, in the clip that shows all of the playable characters, the character who looks like Richter sounds like Richter, and uses the same SotN lines. Wow.