The developer is known for its series of Sherlock Holmes adventure games, its most recent being Sherlock Holmes: Crimes and Punishments. Whether Call of Cthulhu is also in the adventure genre remains to be seen, but the developer did offer four pieces of concept art, which can be found in the gallery below.
This isn't the first time a developer adapted the Lovecraft story to video game form. Bethesda published Call of Cthulu: Dark Corners of the Earth on Xbox in 2005, bringing the game to PC one year later before re-launching it on Steam in 2009. Red Wasp Design also brought forth its own interpretation of the book in Call of Cthulhu: The Wasted Land on iOS in January 2012.
Call of Cthulhu (Concept Art)