The 2012 MotoGP season will begin a week earlier than originally planned after organisers tweaked the schedule.
The first race of the season will now take place at the desert circuit of Losail in Qatar on 8 April 2012.
The Spanish Grand Prix at Jerez has been confirmed for the weekend of 29 April, while races at the Sachsenring and Estoril remain subject to contract.
The British Grand Prix at Silverstone is currently scheduled to be the sixth race of the season on 17 June.
Revised 2012 MotoGP calendar
8 April, Qatar* - Doha/Losail
29 April, Spain - Jerez de la Frontera
6 May, Portugal (STC) - Estoril
20 May, France - Le Mans
3 June, Catalunya - Catalunya
17 June, Great Britain - Silverstone
30 June, Netherlands** - Assen
8 July, Germany (STC) - Sachsenring
15 July, Italy - Mugello
29 July, United States*** - Laguna Seca
19 August, Indianapolis - Indianapolis
26 August, Czech Republic - Brno
16 September, San Marino - Misano
30 September, Aragon - Motorland
14 October, Japan - Motegi
21 October, Malaysia - Sepang
28 October, Australia - Phillip Island
11 November, Valencia - Ricardo Tormo
* Evening Race
** Saturday Race
*** Only MotoGP class
STC (Subject to contract)