Look at this info graphic. It seems to be really complicated.
The FP1 / FP1U have a Mediatek chipset with an unofficial port of CM 11. The FP2 will have a Qualcomm chipset (see Fairleaks) and I expect to see a CM port very soon after the release of the FP2. I don’t think though that FP will provide an official port, but that the company will rather provide all the necessary drivers and stuff for everyone to work on this. We will see how they decide! 