With Belgium GP due to run on September 17 at SPA this year scrapped, the revised F1 calendar is as follow:-

Mar 12: Bahrain Grand Prix (Bahrain)
Mar 19: Malaysian Grand Prix (Sepang)
Apr 02: Australian Grand Prix (Melbourne)
Apr 23: San Marino Grand Prix (Imola)
May 07: European Grand Prix (Nurburgring, Germany)
May 14: Spanish Grand Prix (Barcelona)
May 28: Monaco Grand Prix (Monte Carlo)
Jun 11: British Grand Prix (Silverstone)
Jun 25: Canadian Grand Prix (Montreal)
Jul 02: United States Grand Prix (Indianapolis)
Jul 16: French Grand Prix (Mangy-Cours)
Jul 30: German Grand Prix (Hockenheim)
Aug 06: Hungarian Grand Prix (Hungaroring)
Aug 27: Turkish Grand Prix (Istanbul)
Sep 10: Italian Grand Prix (Monza)
Oct 01: Chinese Grand Prix (Shanghai)
Oct 08: Japanese Grand Prix (Suzuka)
Oct 22: Brazilian Grand Prix (Interlagos)

The organizer of Belgium GP has been promised to bring F1 back to SPA in 2007. With more than one year from now to renovate the track and facilities, it should be sufficient.