Apple shares have climbed more than 6 percent today amid speculation of new products at Macworld Expo and further analyst anticipation about upbeat quarterly results driven by iPod sales. Apple rose US$4.15 to $68.65 after First Albany Securities analyst Joel Wagonfeld raised his first-quarter earnings estimates on the company to 50 cents a share from 47 cents. “Expectations are running high, as we think investors may be anticipating 4.5 million to 5 million iPods (sold),” Wagonfeld said.