I'm really looking forward to seeing the previously-unreleased scenes, but I'm also extremely disappointed that (thus far) there doesn't seen to be an alternate cut.
As for the language in the press release stressing the theatrical cut, I think that's fairly standard language. I looked up the press release of the home release of Man of Steel, and it used the same language:
https://www.warnerbros.com/studio/ne...mbo-pack-dvd-2
Still hoping for an extended cut, though!