BMW Encourages Anticipation for Magic Do-All Something-or-Other

The promo is appropriately called Anticipation On Approach and the slick German masterminds hope to keep us guessing until mid-January. Although we think we'll give our brains a rest and stop thinking about it right now. We're fairly sure that in a year or two whatever fascinating doodad they plan to bless us with will be stock in every new vehicle that slides off the conveyor belt.
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Hopefully it will look better than those Pontiacs...oops. I meant the most recent iteration of the 3 and 5 series.
So, do you guys know what it is by now?