The camouflaged model on display here appears to be the three-door model. From what we can discern, it seems the A1 is going to look a lot more like the S1 after the revisions. The headlights and taillights are more like the new performance model than the current standard car. Unlike the S model, the facelifted version has a different front bumper with reshaped foglights and a slightly altered design.
A release date for the refresh hasn't been announced yet, but regardless it probably won't be coming here. Audi is already aiming the A3 at young, American buyers. The little A1 just doesn't fit with that strategy.