Digitimes reports that Apple is set to update its MacBook Air line early next year, with a new 15-inch model appearing alongside refreshed 11.6-inch and 13.3-inch models. The update will reportedly take place during the first quarter of 2012. The report notes that discounts on the current MacBook Air models should extend through the lead-up to the debut of the new models, continuing to drive Apple's already-strong sales of the ultra-thin notebook line. We first began hearing word of an ultra-thin 15-inch notebook from Apple back in July, with other sources also weighing in on the topic in recent weeks. Digitimes had previously indicated that component production for the notebook had begun with an eye toward a second quarter 2012 launch. Sources have generally been unsure whether the new 15-inch notebook would be an expansion of the MacBook Air line or if it would appear as a slimmer MacBook Pro model, but this latest report indicates that it will indeed be a MacBook Air product. Intel's Ivy Bridge platform, which is due for a spring launch in line with the reported MacBook Air revamp timeline, will bring a significant upgrade to the line's performance, particularly with regard to graphics improvements and new OpenCL support. Article Link: Updated MacBook Air Line with New 15-Inch Model Coming in 1Q 2012?