Okay, so it will have previously-unpublished material, that has somehow not been published in the 50 years since the original came out. That's interesting, sure. But the sheer number of times words like "treasures," "genius," and "gems" are bandied about in a short update smacks of hyperbole and advertising hype. I was around when the original was published, and I always thought it was serviceable. Useful, even. In the right hands, it could even be really good. But genius? Eh...
At least they reiterated their previous talking point about refunds.