It would appear that the name of the next entry in the Kingdom Come series has been revealed. A trademark filing points towards a slightly different naming convention for the upcoming installment in the historical epic, though other details remain scant for now.
As spotted by The Phrasemaker, on the European Union Intellectual Property Office's online database, you can find an entry for a game called Kingdom Come Salvation. While not proof of anything in and of itself, the logo being stylized like the Kingdom Come Deliverance games definitely makes it seem like a potential spin-off, and then we have the information on who made the filing.