It is a bit odd this is a no cost option when the dual clutch transmission is much, much more expensive. A manual version should be cheaper as BMW will likely just be re-using the E60 M5 6 speed box but at this point we are just happy to see the option from BMW. For those keeping score, it was a no cost option on the E60 M5 as well. BMW will have a higher profit margin this time as the DCT transmission is also much more expensive than the SMG III previously used.
Oh, and BMW, please don't make the same mistake as last time making the traction control undefeatable. Let's hope you learned your lesson.