The Factory Yamaha team is to unveil its 2014 MotoGP livery at Jakarta, Indonesia on Friday.
Jorge Lorenzo and Valentino Rossi
will carry the new colours - again likely to be based on corporate blue, in the absence of a title sponsor - as they seek to regain the title from Honda. Both riders will attend the launch.
Double champion Lorenzo finished a close runner-up to Marc Marquez last year, while seven time MotoGP title winner Rossi claimed his first victory since 2010 on his return to an M1.
Lorenzo and Rossi will take to the track for the first time this year during official testing at Sepang in February.