And how do you know this? (the part in bold)
Front-facing camera: iPad 3 = 0.3MP, iPad 4 = 1.2MP
Processor: iPad 3 = A5X, iPad 4 = A6X
Connector: iPad 3 - 30 pin, iPad 4 = Lightning
Maybe camera and processor don't mean anything to you, but the release of the iPad 4 wasn't ONLY for the connector.
BUT they didn't NEED to do a small update on the iPads. I think it was mainly to get the whole new lines coming out having the connector. They added in the few other small things to help update it.
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Or they just wanted to change the release cycle to November without waiting a year and a half inbetween releases.
that too.