Actually no it won't. This game will be anything but a slow burn... even with the main trio... and we've already had full blown sexual intercourse with two different girls and reached third and second-base with others.
Thanks for the heads up. It's understandable why they would be worried given the amount of time that's passed. Chapter 5 of Polarity is the end of Part 1 (of 2) of the story, so it's bigger than all 4 previous chapters combined. This is why it's taking a long time. Radiant Chapter 4 will actually be out first, which shouldn't be too much longer.