According to a report released by Gartner today, worldwide PC shipments will grow 2.8% this year -- though, revenue will fall 11%. The firm's preliminary fourth-quarter forecast indicates that global PC shipments will total 298.9 million units in 2009, and may reach 336.6 million units in 2010, a 12.6% increase from this year.

This news comes after less optimistic research in September, which claimed there would be a 2% decline in shipments for 2009. Gartner said the growth is due to higher-than-anticipated sales in the third quarter, but despite that boost, the market value is still expected to decline. The outfit predicts that the market value of global PC shipments will total $217 billion in 2009, 10.7% less than 2008. That figure may increase by 2.6% to $222.9 billion in 2010.

Gartner noted that Windows 7 would only have a "limited impact" on holiday sales, as few people will buy a new computer solely for Microsoft's new operating system.