First up would be an Astronomy spin, which would provide "a complete toolchain for both amateur and professional astronomers." This would basically be a spin of Fedora 24 that includes KStarts, astropy, AstrOmatic, and other astronomy software components installed by default.
More details on the Fedora Astronomy proposal via this Wiki page. Personally an astronomy spin seems a bit silly with it being fulfilled as well by just installing Fedora and then making it possible to install an astronomy package set or just the specific astronomy applications you desire.
Also proposed is NeuroFedora, a special interest group to focus on packaging and support of neuroscience and neuroimaging applications, libraries, and data-sets. Details on that via this Wiki page.