Sure if you say so.
No, I don't.
I don't see how mentioning 4 playable areas (The Earth, the Moon, Venus and Mars) then tagging on a unplayable area, in the same sentence (Saturn) can be interpreted as anything other that misleading. An entire area, in a game that has only 4 others like it.
I don't see how throwing a grenade towards a landmass in the distance, and saying "We hope to send you there one day", pre-release, can be interpreted as anything but misleading when that same landmass is entirely out of reach when the game releases. They drew attention to it, solely to say "Hey, look at how big a world we made", and that area isn't even accessible in the released product.
That is, at the very least, extremely misleading. Lying, really, if you are being honest.