“DigiTimes” (http://www.digitimes.com) says Apple will update its MacBook Air line with Sandy Bridge processors and Thunderbolt connectivity in June or July.

Quoting unnamed industry sources, the Taiwanese industry publication says the main supply chain makers for the new models remain about the same as for the existing MacBook Air, with Quanta Computer solely responsible for assembly, Catcher Technology supplying casings, Auras Technology a main supplier of thermal modules, Shin Zu Shing supplying hinges, and Simplo Technology and Dynapack supplying batteries, the sources pointed out.

However, none of the makers have confirmed their participation in making new MacBook Airs. And, of course, Apple has made no comment.