The app has been released, it's 933kB for the Nokia 5800 version (Java). Sadly I can't get past the login screen, because it cannot lose focus from the entry fields so any touch of the screen results in more characters being typed. Well at least they tried
EDIT: Ok, I managed to use the 'try' feature which lets you use it without registering. Seems fairly solid; it has a home screen with a live session countdown and session times, a live timing screen (currently empty), a season calendar, and championship standings.
Futher observations.. the help section suggests track data will be available, like temperature. You can also see a countdown to any grand prix in the year for whatever reason. The 'races' tab might include results of all the sessions too by the looks of how it is structured. So it looks like it will be a very useful app, not just for live timing but for keeping track of the season on the go, without using any dodgy mobile websites. Also, you cannot exit the application.
Can you please provide a link to where I can download the app?? Many Thanks.