I will likely want the next gen unit when it ships especially if we see some great improvements.
I am very sure, that the next gen iPad will be a hitter again. This generation iPad is a pilot. Apple is checking the market. I feel very much remembered to the old Newton
device. For those, who don't know it, Apple had a PDA-device in the late 80's with an excellent handwriting recognition. Especially the Newton 2000 was my favorite.
Apple Newton Messagepad (1.Gen)
Apple Newton 120/130 (2.Gen)
Apple Newton 2000/2100/3000 (3. and final Generation)
The Apple Newton was way too early for the market. That's why Steve Jobs's first action, when he rejoined Apple, was to cancel the Newton.
Sadly, but economically understandable.
The iPad is a total difference and will succeed.