Have you ever wondered how the new iPod Nano and iPod Shuffle resembles more in dimensions, where as Apple have just released an interesting snap shot of the logic which Apple have used via old iPod Nano, the upper screen was transformed to new iPod Nano and the bottom was too iPod Shuffle.
Well do not take it much official as it is gag for laughs 
I believe it is money…as a owner of a few previous gen nanos the small screens are ok to me but most people prefer my wifes ipod touch. Only fifty bucks more with wifi…I still wish the new nano had video though.