I doubt it, Once apple goes Iphone 3D/Itouch 3D .. again the life of it will never improve. They improve tha life sure but its drain once the tech is also improve.
I mean higher pixel resolution display.
Higher CPU/GPU
Higher Wifi 3G/4G
Out of tha pass 3 years i still see Cell phone with touch screen avg 6.5 hours of usage. As high as 8 hours an low as 4 hours.
Also stubbed Sony still dont support USB Charging in most of there phone wit...
ipad shouldnt b worth as they are. its good if u gonna long travel or waitting room but def not worth it. i rather go buy laptop over ipad.
ipad/itouch lack alot of features.
Data storage
port card etc. such as SD/usb/produo
i bought my wife 32GB Itouch 3rd gen, i add alot of movies an still lack of space.