The Grand Prix 3 warez version is now out. However, it is a 7 week old beta version with many bugs.
F1-GRANDprix3.net is NOT going to support this, and is not going to tell people the URL to the site, and if any messages appear on the forums, they will be deleted.
Please support Microprose and Geoff Crammond by buying the game.
Anyway, people who have downloaded the warez version have informed me that the game structure is the same as GP2 (e.g. Jams and .dat track files) which means that we can edit the game easily. Jamedit which is available from GrandPrix2.com works with Grand Prix 3, but needs to be updated to support the new 16 bit textures. So, after the Grand Prix 3 release this Friday, we will start offering downloads at the site!