I hope it is new art edition. It would be cool if the school was released in the new art. When I talked to the president of asmodee games (company that currently owns ZMAN) [over a year ago] he said that he hopes/intends to release all promo expansions in the USA (if he can obtain the rights to do so) including those never before released in the USA, but to also get them in the new art. So maybe this is the start of those efforts.
If they are released in old art then congratulations to those that are missing them, but I'm still hoping for myself that these will be new art versions.