Yes but from the
superNet slack I read that one of the next features of Freemarket will be
coinUSD payments

That is correct, and we have CoinoUSD payments functioning now and in testing. Should be in the next release.
And yes, we use ShapeShift for coin conversions.
And no, those screenshots are not photoshopped. (I am flattered, I guess, that they fooled someone!) That is what the UI looks like, and it is functioning and available right now.
-- Knuckle