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What!? Missed calls in Window 8?? Looks like there are some stuff we don't know yet in Window 8. Apparently Window 8 is likely going to support voice calls, which will make it suitable for voice-enabled tablets.
The information comes from the screenshot above, which features a missed calls pane in its Metro UI. And that could be used for some VoIP services, so you shouldn’t get all too enthusiastic about it just yet.
[SOURCE]