Well, what happens when you option a Turbo to Turbo S specs? On the configurator, the S didn't have the typical long list of option choices. This makes me think it takes a cue from Audi in that their top model (the V10) already has a lot of the stuff that are considered options on the lower model (V8.)

However, a software bump is still kinda hard to swallow for $10-15K.