Apple shares rose in premarket trading today on comments by UBS analyst Benjamin Reitzes, who said “We believe that Apple is experiencing a positive mix shift toward video iPods and to a lesser extent, iMacs,” he said in a report. “In addition to solid holiday sales, we believe investors will focus more on potential new products at Macworld in January, including a few new Macs and other new initiatives,” reports the Associated Press. The analyst lifted his Q1 estimates for the second time to US$0.58 per share from 53 cents and forecast a 50% increase in revenue to about $5.2 billion.