Well it has to be a new version because the older version was linked to the previous continuity and this version is set in a parallel universe. Didn't Robinson drop hints about Wildcat, Flash and Green Lantern in an interview? I can understand how seeing Superman, Batman and Wonder Woman on a JSA cover can throw fans of the post-COIE JSA for a loop. They aren't used to seeing them as members. For oldtimers like me on the other hand it's like "going home".
. I Can't wait to see what's different and what's the same.