ledjam38, thanks for the detail but it seems that this no longer applies since the release of pro, and you please update, I'd really like to disable this, I have a 3rd party app which is set to initiate at double click but it can't because the stupid zoom.
If you can find out how to disable Double-Tap to zoom in IE (both desktop and metro mode) I'd be eternally grateful. We need to be able to double click in IE on an app in order to open special context menus.