[Analemma_]

You may want to read both, they are going to be pretty different. For starters, AIUI the new published version is not going to be an SCP story, probably because of rights issues. I assume it will be "SCP with the serial numbers filed off", but we won't know for sure until it comes out. I'd read the existing one and then decide if you like it enough that you want to preorder the new one.

[bee_rider]

“SCP is the the serial numbers filed off” is sort of a funny concept. Conventionally each SCP story is considered to exist within its own canon and the author is able to pick-and-choose which other stories “exist” from its point of view, right? So there are n SCP continuities, and after the book is published there will be n+1, but that +1 is special for copyright reasons, haha.