Sobe in Plastic?

For an occasional treat, I will enjoy a nice cold Sobe beverage. My¬† favorite is the Green Tea, but I also like the citrus flavor and recently tried the Nirvana, which has a melon flavor. All these years the Sobe drinks have been in tall glass bottles. But today when I bought a citrus Sobe, the bottle was not glass – it was plastic. What’s up with that?