A report appearing in the South Korean trade industry publication DigiTimes suggests that Apple's next model of 13.3-inch MacBook Pro notebooks may not enter the mass-production stage until June, delaying a rumored spring refresh that would see the pro line gain Intel's latest mobile processors, codenamed Ivy Bridge. Early June is also the planned debut for the dual-core versions of the chips that would likely be used in the 13.3-inch models.