With the iPhone 4S arriving at market today, the never-sated Apple rumor mill is clamoring for more grist. And, as always, there’s plenty of it to be had, this time involving the iPad 3. According to Susquehanna Financial analyst Jeff Fidacaro, the device is headed into production. Supply chain checks suggest to Fidacaro that Apple is ramping up its fourth-quarter iPad builds to between 12 and 14