In fact, few things have changed: Martina's nose flutes are hand made with nice woods, and each instrument is unique in its shape and wood combinations. But it seems that Mrs Sommer experiments with more complex shapes, including asymmetrical ones.
I got two nose flutes of rather elaborate shapes, one symmetric using curves, and one asymmetric only made of angles. They were provided with an user manual, a cardboard box and equipped with a leather neck cord.
Unfortunately, the "technical parts" have stayed the same since our first review. The airway (which is not rectangular but rounded) is far too thick to provide a real "air blade": it measures up to 3 mm at the maximum of the rounded canal. Then, the mouth hole, which is a perfect circular hole, is also far too big in heigth (1 cm of diameter, while we know that .6 or .7 are the max: Heinrich Handler's Nasenflöten have a 3 mm high mouth hole and works like in paradise!).
So, all in all, a thick airway plus a too high mouth hole make the Sommer's nose flutes sound weak and windy. You have too blow strongly in them, and get a rather medium quality of sound. Schade, sehr schade. Yes, alas, because those nose flutes are beautiful and made with care, for a decent price (20€).