Me too, man that book has been an epic slog. I've ended up rewriting it like 10 times but finally have a draft off to the publisher for editing. I'm still not totally happy with it, but it's the best I could possibly do.

The latest rewrite emphasizes secure coding and defensive programming practices, algorithms, testing, and how to learn a new programming language, and simply uses C in as safe a way as possible to do that. Hopefully it's effective but I still need to sit with students in IRL classes to test that out better.

Are you going to update the online version once you publish the printed version ?

Same here. I pre-ordered it on amazon back in 2013! I am getting pissed as every few weeks I get an email informing that the released date is postponed again.