You need to read through such articles
It is a developer proposal discussion on the topic in regard to the chrome browser and notifications of non http and https.
This key part of the article for example:
The Google proposal was also floated on discussion boards for other browsers and received guarded support from the Mozilla team behind the Firefox browser and those involved with Opera.
This will end up likely being just be a different indication display in browsers other then the lock icon. Firefox already has the little guy in the url and colour coding information and Chrome will likely just adopt a more visual display then they currently do. Google Chrome hides a lot of the url currently so they need such a feature for better indication.
And the further discussion of certificates and https:///yourdomain.com has been made and when it is close to a time where this may become of a must then an option, then BC will I am sure look to implement the option. The way it works currently is a core part of BC and its functionality and platform scope so any change in this regard would be a big development.