Long story short F1 is now run by Liberty Media and Bernie was ousted after decades of being the F1 dictator, of sorts.
Rumor of him being upset and set to start a breakaway series as early as 2019.

We here unrest in F1 all the time, but as far as major changes go this sounds the most plausible yet (Bernie gets things done, Liberty may want 25+ races, Ferrari to reportedly lose their $100M/year bonus for being Ferrari).

If this were to happen what would it be like?
Bernie will probably go with 3.0L V10s (or higher)
and ...
tracks, tire supplier, aero rules, attract teams.... ?