Full castlist according to IMDB

Vin Diesel ... Dominic Toretto
Michelle Rodriguez ... Letty
Jordana Brewster ... Mia
Tyrese Gibson ... Roman
Ludacris ... Tej
Nathalie Emmanuel ... Ramsey
Charlize Theron ... Cipher
John Cena ... Jakob
Finn Cole ... Young Jakob
Sung Kang ... Han
Anna Sawai ... Elle
Helen Mirren ... Queenie (Shaw)
Kurt Russell ... Mr. Nobody
Lucas Black ... Sean
Shad (Bow Wow) Moss ... Twinkie
Thue Ersted Rasmussen ... Otto
Don Omar ... Santos
Shea Whigham ... Stasiak
Vinnie Bennett ... Young Dom
JD Pardo ... Jack Toretto
Michael Rooker ... Buddy
Jim Parrack ... Kenny Linder
Siena Agudong ... Young Mia
Isaac Holdane ... Little Brian
Immanuel Holdane ... Little Brian
Azia Dinea Hale ... Young Letty
Juju Zhang ... Young Elle
Karson Kern ... Young Vince
Igby Rigney ... Young Jesse
Franncis Ngannou ... Ferocious Professional
Martyn Ford ... Lieutenant Sue
Jason Tobin ... Earl
Cardi B ... Leysa
Cered ... Young Leo
Ozuna ... Young Santos
Vincent Sinclair Diesel - Younger Dom

My prediction of Finn Cole as a young Jakob and a young actor for Young Dom were correct, except for Michael Rooker being Dom's father. Not to mention that an appearance from Mr. Nobody looks to be confirmed, so I guess he'll be helping the team with their mission which the reason they have the plane. Stasiak being back is a surprise. So Brian O'Conner is not listed? I guess that's being kept under wraps before the release. With young actors confirmed for Leo, Santos and Elle, did Dom know these people before the events of the first movie? He probably knew Leo and Santos back then I suppose.