The Apple 2.0 blog points to new marketshare data from NetApplications showing that Apple's marketshare increased to 6.28% based on recent browser statistics:
The results are based on a survey of browser visits to some 40,000 URLs and break the stats down between non-Intel (4.29%) and Intel (2.09%) machines.
This represents a 2.05 percentage point increase from six months ago based on their previous data. While the numbers may not directly translate into actual marketshare, it does seem to represent a significant increase within the same dataset.
This information also comes on the heels of reports of 100% growth in Mac sales in January.