Many thanks for your votes. I will close the poll now.
The reason for my asking was mainly the discussion about the problem that IE users won't be able to use the multiple file upload functionality of the new HTML5 uploader here: http://bugs.dokuwiki.org/index.php?do=details&task_id=2408
I.e. they can still upload single files, but IE up to 9 doesn't support the native functionality to upload multiple files (input type="file" multiple="multiple"
But at least users of all the other modern browsers will get the benefit to get rid of that Flash uploader.