Boxster Turbo or RS?
So this might feed again the rumor of a more powerful Boxster model but of course it can't be excluded that this engine was an experimental engine for a prototype only. Porsche tests a lot of different engines/setups, so this doesn't really have to be an engine which goes into regular production.
He also told me that he heard that a Boxster Turbo or RS might produce around 315 HP, maybe up to 320 HP.
This should be more than enough to cope with the new upcoming SLK 55 AMG.
The rumored Boxster Turbo or RS is said to have PASM, Bi-Xenon, 19'' wheels with wider rear tires (275s or 285s) as standard.
Again: this is just a rumor, nothing confirmed. And as I don't have even the slightest official information about such a project, I suppose it might take at least two to thre years until we see a final product. If ever.