So from what I can tell Mistborn is soon to enter post-production and yet Spellbound is still expected to be released before it? Sounds promising.
As I mention in the post, licensed products take a while in post-production. First and foremost, the license holder (in this case, Brandon and his peeps) have to review and approve everything, and we may still have to make revisions if they're not 100% happy. Also, Mistborn presents some interesting production hurdles that we're still working out with the printers (we'll talk more about that later).
Spellbound isn't done, but it's not far off either. We'll be posting more detailed reports from the trenches as we enter the final phases (which is when the work's most interesting to you - earlier stages involve lots and lots of (sometimes fruitless) brainstorming, (seemingly unnecessary) back and forth, and yes, false starts.