Just thought you might want an update... I have 19 viable levels and a flow plan for a chapter now. I intend on making 22-25 in total and trimming down to the best 20.
Although the decorating, testing, tweaking, and revising will take a little while, I think some of the slowest work is already behind me... I'd hope to have this chapter ready for play this month.
There's going to be at least one level where you control Meat Boy in a completely new way... and not anti-gravity this time. Can't wait to share it with you guys!