I confirm. Nakao Boushi will do the programming. And, also according to that text, Ryuukishi07 will be responsible for the scenario and supervision of the whole project. He will draw the original art for part of the project, and it’s very likely that his illustrations will be kept, just as usual.
By the way, the musician Luck Ganriki is from the same circle as Nakao Boushi and will be participating this time, too! Yay~