Sega appears to be teasing a Japanese announcement for Daytona USA. The company posted a video at its official Nico Nico Video channel. In the short video, an announcer says "Gentlemen start your engines," followed by the text "See you tomorrow."
View the video for yourself here.
This story is going up a little late, so tomorrow is actually today. Check back later for what will likely be an official announcement of the racing revival for Japan.