how about Icar, Iwatch, Iglasses (watch 3D video with your customized Apple-made correction lens)
list can go very long...
a great Case study in B school for a long time.
However, will smart consumer eventually get tired? some already did. gadget is just gadget, you only need one or two. ASk around who is buying ipod if he can get a iphone?
I-banks's models are over-estimating the cash flow for Apple's products. Greedy investor will be punished when momentum runs out.