xXx 4 is at early stages of pre-production, but considering the xXx franchise has the potential to pull in high profile action stars from around the world, the possibilities are limitless!

The latest is that Taiwanese superstar Jay Chou (The Viral Factor, The Green Hornet) is joining Vin Diesel, Zhang Lanxin (Railroad Tigers), and TF Boys member Roy Wang (Pound of Flesh).

The last xXx sequel, xXx: The Return of Xander Cage (read our review), grossed $346 million worldwide. The film was noted for the addition of martial arts superstars Donnie Yen (Ip Man 3) and Tony Jaa (SPL II: A Time for Consequences).

We’ll keep you in the loop as we hear more about xXx 4, so stay tuned! (via Samson Kwok)