I have an 08 M5 and really looking to make this upgrade. As of March 2009 the MY 2010 M5s will be in production with the new Idrive. I only have 8k on my 08 and trading it in for an 2010 is going to be WAY more costly then making this upgrade.
R8GT Spyder '12 / M5 '13 (MT) / Cayenne S '12 (Baby mobile
Deposit in for the i8 - waiting game now!