I should point out that if you look at the interview Twightlight mentioned in Official Nintendo Magazine #2, the one with Gouichi Suda of Grasshopper, there are some other points that connect the dots. Another choice quote:
Edit: Smaller k7 pic
<_<ONM: killer7 was one of our favourite games of 2005. Can we expect something similar from your Revolution game, or will it be a completely different experience?
GS: Thank you very much! killer7 is the first of my games that has been published overseas. I'm absolutely overjoyed that many people could enjoy my world-debut game! I'm developing the Revolution game with a similar ideology to killer7. I always aim to develop unique, incomparible games that no one has played before.
Edit: Smaller k7 pic