New thermal images of the third-generation iPad show that the device does indeed heat up in the bottom corner. Dutch site Tweakers.net reports (Translated Link) that it sat a third-generation iPad next to an iPad 2 and ran GLBenchmark on each device. After five minutes, the temperature at the hottest point on both devices was measured, with the iPad 2 heating to 28.3º C (roughly 83º F) and the third-gen unit reaching 33.6º C, or roughly 93º F. Apple quotes the third-generation iPad’s operating temperature as 32º to 95º F, so while the unit is indeed getting warm, it is still within normal ranges. [via Engadget]
Update: As noted in the comments, the operating temperature as listed on Apple’s site pertains to the environment around the iPad, not the unit itself.