The ROM is named Null, and it is a fully deodexed and rooted ROM with superuser access and lots of interesting features. It basically gives you a version of stock Android along with Nova Launcher and other goodies. But the two best features of the ROM: 1) Bluetooth tethering, meaning it will work with any device, not just Samsung Galaxy phones; and, 2) access to the Google Play Store.
Additionally, Null offers a native email client, calendar and contact syncing, the browser and gallery app from CyanogenMod 10.2, MTP support, a weather widget, live wallpaper support, and more. There are obviously some things that don't work, bugs, and missing features; but, like most custom ROMs it is a work in progress. No word on what kind of battery life you should expect, but we wouldn't expect too much at first. Still, it would be a fun thing to play around with.