Developer Joe Hewitt announced tweeted that the feature wasn't expected to make it into 3.0 but it was very easy to code.
Only took a few minutes to add 3GS video uploading support to the Facebook app... making it usable will take more time.
3GS video uploading for the Facebook iPhone app is a go -- didn't plan to include it in the 3.0 update, but it was really easy to code.
You can read more about the 3.0 update here
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