Looks like "the plus" one is only if you have PCM and is giving you in addition (because the PCM has the display), the "lap times" software and also with the plus you can save your personal set up for seat, lights, etc.

Nowhere it says that the Motronic+PSM+PASM settings are coming as standard (or the sport button comes as standard).

Anyway it's a pity that Porsche doesn't offer only the sport button as an option, separate from the ugly (IMO) stopwatch.