Still plenty of question marks, but gathering WRC2 news and rumours of the forum and from the net (most recent is Ucci in a 208 backed by Pirelli), next year field could look like this:

Fabia: Tidemand; Veiby; Rovanpera; Nordgen; Guerra; Pieniazek; ….
Fiesta: Ostberg; Camilli; Kajetanowicz; Bakkerud; Solans; Loubet; Greensmith; Ciamin; Abbring; Arai; Katsuta; Heller; ....
i20: Paddon; Huttunen; Lim; Andolfi; ….
DS3/C3: Lefebvre; Bonato; Bergkvist; ….
208: Andreucci; ….
Iriz: Mellors; ….
Polo: ….