DigiTimes is recycling an old rumor that was popular in 2011 - That Apple will release two iPads in 2012. The rumor made no sense in 2011, and it makes no sense in 2012.
Note: As a source of rumors, DigiTimes can, at best, be described as mostly inaccurate.
The rumor is that the iPad 3 will feature a QXGA (1,536x2,048 pixels) display and longer battery life, and then later in the year Apple will update refresh the iPad again, releasing the iPad 4 with unknown specification.
According to 'sources,' the iPad 4 refresh will 'compete with an array of Android-, Wintel- or WoA (Windows on ARM)-based tablet PCs to be released in the fourth quarter.'
It makes no sense - no sense whatsoever - for Apple to release two iterations of the iPad in less than a year.
Like i said, the rumor made no sense in 2011, and it makes no sense in 2012.