Announcement comes on same day that three Kenyan marathoners get banned for doping.
The lineup is the strongest since the race's founding in 2007.
It's now the sixth event in the series.
The Olympic gold medalist in the marathon is keeping a low profile.
He set a PR in Tokyo thanks to practicing a new dance craze.
He defeated Haile Gebrselassie at the end of the race.
He faces stiff competition in Tokyo on Sunday.
She tested positive for a banned drug.
He hopes to qualify for the Olympics next February.