New photos comparing a claimed next-generation iPad back panel to an iPad 2 offer further evidence that the device will be slightly thicker than its predecessor and sport an improved rear camera. In a wider-reaching roundup of iPad rumors, M.I.C. Gadget has posted a number of comparison photos, which claim to show an iPad 2 and a “confirmed rear shell for iPad 3 Wi-Fi + 3G model”. Notable in the photos is a more gradual taper to the edges on the iPad 3, a much larger rear camera lens, and the fact that the new model is roughly 1-1.5 mm thicker depending on the model, although it is said to still fit inside some iPad 2 cases despite the difference. Apple is expected to announce the next-generation iPad on March 7.