I’m in the process of setting up a test Piwik 2.0.3 installation, and from looking in the Settings, it appears that “Do Not Track” support is disabled by default, meaning that visitors who have “Do Not Track” set would still be tracked by Piwik nevertheless, contrary to their wishes.
Is this an intentional default setting, or a bug? It seems contrary to the general privacy-respecting ethos that Piwik has.