On the other hand, according to Car Magazine, the 911 Turbo being shown at 2009 Geneva Auto Show will have DI. That would imply DI will be in the Turbo for MY2010. I tend to doubt that Cayman would get DI before Turbo but I guess it's possible (e.g., Cayenne).

I will also be interested to see how much DI improves performance (power & efficiency). It may not be quite as great as expected for the Porsche engines. In particular, DI achieves higher efficiency, in part, because it allows for higher compression ratios, which in turn allow greater energy recovery per piston stroke. However, the flat six in the Cayman S is already operating at a compression ratio of 11.1. Audi's 3.2 DI V-6 is only marginally better at 11.3.

See,

Porsche 911 Turbo: first pictures and details of 2009 update