However, the FIA today confirmed that the information regarding the cars' weights prior to the race will remain secret. Until now, the ruling body had presented to the media – shortly after the qualifying session on Saturday – the weight of each car, giving the fans a glimpse into each team's strategy for the race.
That will no longer happen during the 2010 season, as the FIA removed the part that stated the cars' weights will be published from the rulebook.
Additionally, the FIA also changed the maximum 8 engines per season rule a little bit, confirming that “should a driver use more than eight engines he will drop ten places on the starting grid at the first Event during which each additional engine is used. If two such additional engines are used during a single Event the driver concerned will drop ten places on the starting grid at that Event and at the following Event.”
Another interesting tweak of the rulebook regards the drivers that will potentially substitute other drivers during the course of the season (as it often happened during the 2009 season). The replacement driver will indeed be allowed to test an F1 car prior to his F1 debut on the condition that he hasn't raced in F1 during the previous 2 years. Also, the test will be allowed on a race track that is currently not hosting F1 races.
Also, if a driver is very slow during the formation lap and fails to get into his initial grid position by the first safety car line, he will start the race from the pits.