I... I have been thrilled by its awesomeness.
I worried that you might have stopped working on it as there isn't enough crowd. I'm glad you didn't.
The update is mind-blowing! I'm checking it in a moment. Bosses, bonus levels and what not.
If this game doesn't become big, I'll hate the world. Seriously, why such an awesome games isn't getting attention?
BTW, you should update some of the screenshots in the original post, as that is the one people will see first.
EDIT!
I can't really complain about this update. This is almost perfect.
And surprisingly, I'm doing better than before.
I'm currently at Level 24, flagged only 7 levels(1, 2, 3, 4, 9, 10, 11), skipped Level 15 & 16 (I'll beat 16 easily, but 15! This level is too hard no matter what, but I bet that you put it in the right place. This also makes the player learn skipping levels, though it should be mentioned that you can skip levels).
I wonder what's inside those bonus levels. I can guess, that red levels is centipede boss, the green next to it is Survival mode and the final one is the 'YAY' level. Though I'll never reach them.