The iPod/iPhone lines already do that. Now that Apple has the flexible battery technology it's no real surprise--the battery is probably nearly as big as the iPad.
Was that actually stated? I thought they were just saying that use would last 10 hours and then made the separate statement that you could watch movies for an entire flight.
And Apple says my iPhone has 12 days of standby time. Ha. I'll wait for the reviews to believe anything about the battery life (as I do for all CE devices).
Technically Apple says playing video, surfing the web or listening to music. It sounds like 10 hours of use to me, probably some of each. It has a 25 watt-hour battery. Nothing huge, for comparison the MacBook Air has a 40 watt-hour battery. They don't break out what the iPhone/iPod Touch have.
In the iPad specs page you linked, footnote #4 states:
"Testing conducted by Apple in January 2010 using preproduction iPad units and software. Testing consisted of full battery discharge while performing each of the following tasks: video playback, audio playback, and Internet browsing using Wi-Fi. Video content was a repeated 2-hour 23-minute movie purchased from the iTunes Store. Audio content was a playlist of 358 unique songs, consisting of a combination of songs imported from CDs using iTunes (128-Kbps AAC encoding) and songs purchased from the iTunes Store (256-Kbps AAC encoding). Internet over Wi-Fi tests were conducted using a closed network and dedicated web and mail servers, browsing snapshot versions of 20 popular web pages, and receiving mail once an hour. All settings were default except: Wi-Fi was associated with a network; the Wi-Fi feature Ask to Join Networks and Auto-Brightness were turned off. Battery life depends on device settings, usage, and many other factors. Battery tests are conducted using specific iPad units; actual results may vary."
