Question regarding custom ROMs and apps on Galaxy Note Edge

Regarding the much talked about "edged screen" on the Galaxy Note Edge, are all the useful and popular apps on play store compatible with the edge and its interface? Also, I root and install custom ROMs on all my smartphones and I love tinkering around with them. So I was wondering if all the popular custom ROMs like CM and all are compatible with the edge? Are they optimised to work with the edge?
