Apple’s MacBook Air is expected to have a global market share of 39% for “slim notebooks” in 2012 and the market share will slip to 28% in 2013 due to increasing sales of ultrabooks, reports “DigiTimes” (www.digitimes.com), quoting unnamed “Taiwan-based notebook supply chain makers”

Shipments of MacBook Airs increased to 1.4-1.5 million units in September, the article says. “DigiTimes” predicts they’ll reach an estimated 1.5 million units in October.