This rumor was reported on the 29th June 2012, by a report from the Chinese-Language Apple Daily.
According to the Apple Daily Apple will be launching a new version of iPAD this summer. The upgrade is believed to feature a newer panel technology known as indium gallium zinc oxide (IGZO). This new feature will allow this new iPad to have an even thinner design looks and a much longer batter life. Thus making Apple to shift from Samsung to Sharp as their new panel supplier.
Presently about 60% to 70% of the iPad panels are supplied by Samsung, leaving about 40% to 30% of the ipand panel supplier are from both LG and Sharp.
Resource from : Apple Daily; digitizes