This is not much different from the original, the added footage doesn't give much revelations. As for “The keys to the mystery have never been clearer…”, don't believe it, if you want some revelations to the mysteries, I recommend the book by Kitamura… if you can read Japanese, that is. That book revealed so much mysteries that I went and watched the whole series again.
In addition to the Directors' Cut episodes, Resurrection will include an exclusive 25-minute interview with Richard Taylor, co-founder and head of Effects and Creatures at Weta Workshop, the multiple Academy Award-winning (for The Lord of the Rings trilogy) special effects studio currently working on the Neon Genesis Evangelion live-action feature. Also included are numerous never-before-seen production images from the theatrical release.
Neon Genesis Evangelion is the story of a reluctant young hero, called upon to pilot an immense robotic weapon in battle against alien invaders in the year 2015. As the remnants of the human race cower in subterranean cities, a deadly war is being waged on what is left of the planet. On one side are the mysterious beings known as Angels; on the other, the special agency NERV and mankind's last hope, the awe-inspiring Evangelions. Piloted by a special team of teenage warriors, these giant bio-mechanical humanoids are the only thing that can withstand the force of the Angels' defense fields long enough for the pilots to tackle the invaders themselves in hand to hand combat! With the lives of every soul on the planet at stake, these few youngsters must reach down deep inside themselves to find the strength and courage necessary to meet the Angels head on in a desperate attempt to save mankind.