This is Rossi's Ducati Desmosedici GP12

VALENTINO ROSSI has revealed his new Ducati Desmosedici GP12 ahead of the first test at Sepang.

The '90% new' Desmosedici was Tweeted by Rossi himself along with the statement that the 'new bike is ready', in anticipation of the Italian's first laps on board the GP12 tomorrow.

When compared with the GP0 design from late last year, the aluminium frame looks different as the shape appears to be a semi-monocoque chassis design, running up and over the engine rather than around the sides.

Ducati have brought both the all-new prototype, that has been dubbed 'the Phoenix', along with the bike that Rossi tested at Valencia, so the factory team can run back-to-back tests between the two versions.