Why Siri Isn't Being Released as an iPhone 4 Upgrade

Yea, so... why isn't it being added on as an upgrade? 

Given the joy which Apple‘s iPhone 4S users have been greeting Siri there’s been some speculation as to why it’s not been released as an upgrade to the iPhone 4. The cynic’s answer, that the joy at getting Siri might spark an upgrade to an iPhone 4S, seems not to be the reason.

It is actually possible to be too cynical, something which comes as a slight surprise.

The answer is that the hardware won’t be able to support it properly. It’s not about processing power, bandwidth or memory. It’s about the technology in the iPhone 4S which dampens background noise and which the earlier iPhone 4 doesn’t contain. 

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