Consider the source, perhaps? JBJ is listed; and that's the only thing that matters, right?

As long as Bon Jovi's "official" fan club is called BSWJBJ, it's gonna be hard for me to take anything that comes from them seriously. That's not anything against Jon, btw; but if he wants to try and convince people that Bon Jovi is a "real band" again (and not just his personal franchise), the name of the band's official fan club might be a good place to start.

As for the announcement itself, maybe it was written by someone who considers that to be the "new and improved" Bon Jovi lineup and wanted to press home the point. I can't see a need, otherwise, to spell it out. You would think that, surely, members of the fan club know what is meant by "one member of the band".

(That, or they suspect that it's gonna be Shanks or Everett who will be answering the questions and they want to head off any disappointment when it's not one of the other guys.)