Twentieth Anniversary Edition of Tim Burton's Nightmare Before Christmas Book

This re-issue of Tim Burton's The Nightmare Before Christmas was issued on September 17, 2013. This Twentieth Anniversary Edition contains a few new additional illustrations from Tim Burton. Are there enough new illustrations to make it worth owning this if you already have the previous edition? I'm a completist when it comes to my book collection, so I'll happily make room for both on my bookshelf.

Also available at Barnes and Noble.