MotoGP's governing body, FIM, has announced amendments to the provisional calendar for the 2008 championship.
The revised calendar includes four changes compared to the original version, although the amount of rounds and the venues remain unchanged.
The races in Portugal and Valencia will be held one week earlier than originally scheduled, while Japan and Australia have exchanged their dates.
Provisional 2008 calendar:
Date Grand Prix Circuit March 9 Qatar Doha/Losail March 30 Spain Jerez de la Frontera April 13 Portugal Estoril May 4 China Shanghai May 18 France Le Mans June 1 Italy Mugello June 8 Catalunya Montmelo June 22 Great Britain Donington Park June 28 Netherlands Assen July 13 Germany Sachsenring July 20 United States Laguna Seca August 17 Czech Republic Brno August 31 San Marino Misano September 14 Indianapolis Indianapolis September 28 Japan Motegi October 5 Australia Phillip Island October 19 Malaysia Sepang October 26 Valencia Ricardo Tormo - Valencia