I watched this last night. OMG it was awesome. The new changes were very subtle, like new backdrop landscape paintings, etc, but they also redid the shot where the creature comes out of the wall, while adding smoke and stuff to make it more dramatic.

Did anyone else see this? I thought it was so cool!

As a fan of TOS, I have been watching the remastered shows. I am very impressed. I can't wait for the Doomsday Machine episode to come on. Lots of SFX and ship shots. I saw a preview for it and it looks great. They've done an excellent job of redoing these.
You can tell that they're fans too.