No secure sources, but theres some little Rumors that WorldRX could have in 2016 races in Mexico (because of Rally tradition), Australia (cuz they r starting its own national series this year with RX Lites cars and already said that they are planning that) and Japan (Monster Energy racing events connections + huge FormulaDrift interest).
The other rumor is that Hockenheim could steal the german gp from estering =[....
And theres a new track under construction in Finland. I forgot the name, sorry

Again....
No secure sources, only a few conversations on insider's twitter and instagram comments