A new report suggests the upcoming iPad 2 will be a minor upgrade, but the iPad 3 will be super-duper. An anonymous Apple staffer says the iPad 2 has had “a number of problems along the way” Apple is expected to unveil its next-generation iPad on Wednesday. The iPad 2 is a smaller, thinner and lighter design; front- and rear-facing cameras; a larger speaker; a faster processor; more RAM; and possibly a dual-mode wireless chip for CDMA and GSM networks.”]