Engadget has the scoop:
From what we’ve been told, the thinner, sleeker tablet will sport a new screen technology that is akin to (though not the same as) the iPhone 4’s Retina Display and will be “super high resolution” (unlike reports to the contrary). The device will remain at 10 inches but will now feature both front and rear cameras (not a huge surprise), and… there’s an SD slot. That’s right — our sources say with near certainty that the device will have a dedicated SD slot built in (with no traditional USB slot). In fact, see that weird notch in the photo below? That’s where the SD part will be located. What’s most interesting, however, is what’s happening under the hood.
The new iPad will feature a dual GSM / CDMA chipset produced by Qualcomm and will mark Apple’s shift away from Infineon as its chipset maker to Qualcomm for all of its mobile devices. It’s not clear if the chipset being used will be based on the company’s EV-DO / HSPA Gobi variety or an entirely new design. Presumably, the strength of the new dual-mode chipset is that it will allow both Verizon and AT&T to offer the iPad simultaneously.