If the revised Cayenne is anything to go by there will be no change in the interior. Noticably the new Cayenne does not offer keyless go or iPod connectivity, or a decent navigation system.

The best you might hope for in 997.5 is for that f*cking wart to be taken out to the woodshed and gotten rid of. At that point maybe Porsche can offer the "Sport" option as std.