That question was asked at the meeting but never seemed to get answered. Aluminium would be fairly lightweight. The battery in it might add a bit of weight. People at the meeting were trying to figure if the sum total of the iPad Pro and the case was more or less than MacBook Air and similar models. ?Probably on the website it might say for each individual iPad what the weight is. ?Weight is important if you travel things of course. We have some members who go to some very remote places with their gear. Me personally iPhone does everything I want on a short trip. I had a fortnight in UK in March - just took iPhone..?
Jude