So far, the only device that makes use of SailFish OS is Jolla's own and that the OS will be available for older Samsung devices soon. At this time, we don't know what are the older Samsung devices so we'll keep ourselves updated about it.
The interesting thing is that you are able to run Android apps via the custom Android kernel using SailFish OS but even then, we're pretty much more interested in Blackphone and its OS for the sake of better mobile security even though that phone has its OS that is also Android based. The other OSes we can be interested in will be Firefox OS and Ubuntu Touch OS in which we should be able to use as well in the future if they are available for any Android device.
