Rumors of Apple using Sharp's innovative IGZO technology for iPad screens predate the 3rd-gen model. IGZO is an acronym for Indium Gallium Zinc Oxide, a transparent compound semiconductor that promises significant power savings when displaying still images, according to Sharp. It also enables screens to have much higher resolutions, and it can show images when the power is turned off.
So is Apple going IGZO? British tech blog Tactus recently predicted the 5th-gen iPad would have an IGZO screen but offered no supporting evidence. At CES 2013, Topeka Capital Markets analyst Brian White called Apple a "prime candidate" to adopt IGZO, according to Apple Insider. Overall, there's not enough evidence at this time to say the next iPad will have an IGZO screen. However, future tablets from Apple, and its competitors, might very well incorporate the technology.