Following Xiaomi along their lines (of releasing MIUI for non-Xiaomi devices), Jolla have announced that ‘early adopters’ of the Sailfish OS can now flash the firmware on their Google Nexus 4 handsets. Jolla said in a blog post that the company sent emails to the early adopters with links and instructions on how they could get Sailfish OS up and running on their Nexus 4 smartphones. As you would expect, this comes with a disclaimer which clearly states that the Sailfish OS is a WIP (work in progress) project.
TheJollaBlog also points out that the company is working on a similar release for the Samsung Galaxy S3 LTE for the future, however, there is no ETA provided at the moment. Sailfish OS is basically a unix-like OS with a load of different features added by the Jolla team.