A new cryptocurrency is coming in 2020 by Facebook. Zuckerberg will try to partner with the governments and make it a bridge between his products like WhatsApp and Facebook.
Where could it be heading to?
I wouldn't expect much in terms of mass adoptions, Facebook has no ethics and they would sell their own mothers to make money.

I think your view is wrong this time around, 70% of people that are using Facebook are IT inclined and it wont be much of a strange thing to them when they bring the coin to the notice of the public. The adoption might not be immediately, but Facebook as you know will have their tactics that will enable them gradually impose it on their users with time.
I mean their business users, because that will be their main target. If you look at most of the investor that ICO has successfully gotten are through social media and majority of them got to know about it through Facebook, so what makes you think they will not succeed now that its their own personal project.