I assume this means that the launch will be connected in some way with this year's 24-hour race, but is there any information about exactly when?
Will it be on the race weekend - 17/18th June?
Or in the week of practice and qualifying that leads up to the race?
Or could it be as early as the test day that takes place on 4th June?

except this:

Prof. Dr. Martin Winterkorn, Chairman of the Board of Management, "I'm particularly looking forward to our super sports car - the R8. It will be launched with a 420-horsepower 4.2-litre engine; other attractive engine versions offering even more power will follow at a later date. The start of production will be in neckarsulm at the end of 2006; the market launch will follow in 2007." in Annual Press Conference 2006, on February 22, 2006 in Ingolstadt.

The 117th Annual General Meeting of AUDI AG will be held on Wednesday, May 17, 2006 at 10.00 a.m. at the Audi Forum Ingolstadt.<ul><li><a href="http://www.audi.com/audi/com/en1/company/financial_info/financial_events/annual_press_conference/press_conference_2006.html">http://www.audi.com/audi/com/en1/company/financial_info/financial_events/annual_press_conference/press_confe

I did not see an R8 at the Le Mans test weekend (Fri 2nd June to Sunday 4th June). Six RS4 and eleven Q7 course cars, various RS4 and A6 Avant team road cars, and two R10 TDI race cars, but no R8 road car.