Here is the 2010 Fia GT calendar...I think it's quite provisional because some events still need to be confirmed.
FIA World GT1 Championship :
4/4 Yas Marina** (Abu Dhabi)
18/4 South Africa*
2/5 Silverstone Supercar 2010
16/5 Brno
30/5 Paul Ricard
4/7 Canada*
1/8 24 Hours of Spa-Francorchamps*
29/8 Nürburgring
12/9 Algarve
3/10 Budapest*
14/11 China*
28/11 Brazil
European GT2 Championship :
2/5 Silverstone Supercar 2010
16/5 Brno
30/5 Paul Ricard
20/6 Oschersleben
1/8 24 Hours of Spa-Francorchamps*
29/8 Nürburgring
12/9 Algarve
3/10 Budapest*
17/10 Zolder
European GT3 Championship :
2/5 Silverstone Supercar 2010
16/5 Brno
30/5 Paul Ricard
20/6 Oschersleben
12/9 Algarve
3/10 Budapest*
*to be verified and confirmed