Voodoo Extreme has gone to the trouble of translating Nintendo's Japanese website where the gaming giant posted a comparison between the DSi and its predecessor.
Although most of the hardware changes can easily be considered 'fine-tuning' there is one that is a big change.

Apart from the bigger screen, changing a few millimetres here a couple of grams there wasn't really shocking but dropping the full brightness battery life from 5-8 hours to 3-4 hours rather is.

Other than that, they changed a few holes (speaker, microphone, camera), moved the power button to the inside of the device and added the long awaited SD slot by sacrificing GBA compatibility.

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