Apple (News - Alert), in readying the iPad for its April 3 launch, is adjusting its book categories and certification procedure for applications to work on the tablet device, according to reports.

The company is apparently taking extra care related to these applications because the sale of applications are expected to be a key driver or revenue related to the iPad, the Forbes report indicates, noting that Broadpoint AmTech analyst Brian Marshall believes Apple will generate enough revenue from content sales equal to approximately 10 percent of iPad hardware sales by the end of 2010 and about 30 percent in 2011.