Anyway, Sailfish on N9 and Nexus 4 are very useful for developers without real Jolla smartphone, and users wanting to test Sailfish OS in everyday use. Both my case, I bought Nexus 4 just to test new Android versions, Ubuntu Touch and now Sailfish OS will remain installed. It depends on : - XWayland being ported to Sailfish; - or some Linux ARM distribution (Debian, etc) being ported to Wayland. No time frame for both options.