The addition of a new, musically-unrelated movement to a famous work was never a good idea, so it's a good thing that the "Pluto" movement won't become a concert staple. But the odd timing -- of having a recording come out just as Pluto gets demoted -- is, ironically, gaining a lot of attention for "Pluto," as this article explains:
Matthews could have warned them about this ages ago. His programme notes for the world premiere mentioned Pluto's questionable status, "but because I had been commissioned to do it I couldn't turn around and say, 'Hey, it isn't a planet'."
And over at Classics Today, David Hurwitz has an Onion-esque take on it.