Preview at WWDC likely in June, followed by September launch.
Apple's Share of U.S. PC Shipments Rises to 12% in 2Q 2012
Gartner's Preliminary U.S. PC Vendor Unit Shipment Estimates for 2Q12 (Thousands of Units)
Apple's share of the U.S. market rose to 12.0% for the quarter after two straight quarters of decline due to the company's seasonality. The figure, which allowed Apple to consolidate its hold on the third position in the U.S. market behind HP and Dell, marked Apple's second best performance in recent years following a 12.9% share in the third quarter of 2011. The third quarter, which includes back-to-school purchases in many of Apple's strongest markets, is typically its best-performing quarter.
Apple's U.S. Market Share Trend: 1Q06-2Q12 (Gartner)
As usual, Gartner did not cover Apple's worldwide market share for the quarter, as the company does not rank among the top five vendors on a worldwide basis. PC shipments experienced a 0.1% year-over-year decline on a worldwide basis, with strong growth from Asus and Lenovo being offset by declines from HP and Dell.
Update: IDC has released its own estimates for the quarter, pegging Apple at a 1.1% year-over-year decline in U.S. shipments and an 11.4% share of that market. IDC estimated that Lenovo was able to enter the top five on the strength of a 6.1% year-over-year gain, but the overall U.S. market was much weaker than expected in registering a 10.6% drop.