If you look closely the Haas logo is on the lower side pod of the Ferrari cars as of the British GP. By all accounts it's a done deal, and it appears that Haas will work in a partnership with Ferrari similar to the Toro Rosso/RB teams.

And mark my words, Danica Patrick is almost sure to be involved in the car in some way, due to the draw she has. I doubt she'll drive the thing, but crazier things have happened!