Users have had the ability to upload files to Google Drive by dragging-and-dropping them into the web interface since April 2011. They can now upload folders from their computer to Google Drive in the same way. Note that this feature is only available using the latest version of Google Chrome.

Editions included:
Google Apps, Google Apps for Business, Government and Education

For more information:
http://support.google.com/drive/bin/answer.py?hl=en&answer=2424368

whatsnew.googleapps.com
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