Not just Bolt. Mills is tkking over the 400m program at Racers and MVP has Rusheen McDonald and Denard Coote in development.
This is much speculation that since the short sprints are too packed in Jamaica than many will be forced to step up to 400m like Ashmeade, Ramone McKensie, Dexter Lee, Marvin Anderson, Jason Young, etc.
We could see a tectonic shift to 400m in Jamaica in the blink of an eye.