Reddit reviews Shadows in Flight (The Shadow Saga Book 5)

It was called the "enhanced" edition. I found out reading the comments (you can see them here). It has pictures in every chapter, two added vignettes and it's like a third of the size of the unabridged version. The original version has something like 300 pages, the "enhanced" is more like 100.

I believe this only happened with the ebook version of the book.

edit: When I found out I had the abridged version, I went out to hunt the original and read that one too.