Nearly half an entire chapter.
That's now much longer COT-R is now that the 3rd draft is finished; around 8K words. That doesn't even take into account all of the stuff I deleted, either. If the new content is taken in addition to the deleted stuff (rather than in place of) the total comes around 30K words, which is longer than the longest chapter by just a bit. So basically, I deleted a whole chapter worth of stuff during this revision only to add back in a chapter and a half! (Or a really really long chapter!)
I'm pretty satisfied. The story seems much more solid, now. Plot holes were filled in and smoothed over. A great deal that was left unexplained has now been made much more clear. Conflicting and contradicting things have been straightened out. I think this will be the last revision. All that's left now is proofreading.
Unless, of course, one of my critics discovers a new plot hole I totally missed. It's still possible. I hadn't realized before that there would be so many.
Oh, and the current page count? 1,113