That about matches the "secret" Audi roll out plan I posted here last year.
http://www.motorworld.net/forum/showthread.php?t=53263
*noteworthy cars
R8-V10 - Fall 2008 (Frankfurt?)
A5 Cabrio
RS5 - Spring 2009 (Geneva?)
R8 Targa - Spring 2009 (Geneva?)
A7 Coupe - Summer 2009
TT-RS - Summer 2009
A5 "Sportback" - Fall 2009
A1 - Winter 2009
A8 (new) - Spring 2010
A7 Cabrio - Spring 2011
R4? Mulled. Unlikely.