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It's been implemented in the main website (forums etc.), and will be implemented in the blogs running a different theme over the next week. The deadline for implementing this is as far as I know October 1st. 2015.
I have received several reports after this was implemented that some uses receive an error:
"Resource not found", when they click on a link on the site.
As not everybody has this problem, so i'm sure it has something do with you browser caching/cookies. So if you have this error, please reset your cookies/browser.