Today, TGMOnline.it posted a new Grand Prix 4 video which is footage from a press-event at Bristol (UK) early February. The video features some GP4 footage from both the PC & Xbox versions, as well as interviews with some of the development team. The file is 46mb big, and the GP4 footage is quite difficult to see + there is not really any new info, so i'd only recommend you download it if you have a fast connection.
The video is available on SimRacingFiles.com here. The file also requires the DivX extension for Windows Media Player.
GameSpot UK have also posted their preview of Grand Prix 4 with their first impressions of the game.
The in-game graphics engine has also been completely rewritten, with hardware-only features like T&L, full screen anti-aliasing, environment mapped cars and environment sourced reflections in wet conditions. You'll even notice heat haze from the engines. Of more interest to hardcore Grand Prix fans is the news that for the first time in a Crammond game the teams all have their own individual car shapes - GP2 and GP3 only supported a single, generic shape. This could be altered using third party editors but only one shape could be used at any time. Speaking of which, we're assured the code will once again be easy to get into and edit which is good for the online communities.The full preview is available here.