I have created a Fedora 23 image for Hummingboard/Cubox-i. I will also create a Fedora 24 image as soon as it is released.
wget https://googledrive.com/host/0B1Z2aFriRL5PUGpzMHRVbDBNYU0 -O Fedora-Minimal-armhfp-cubox-i_hb-23-10-sda.raw.xz
The MD5 hash of this file is aa854909d5e3c9f76a964635b9c4f790
I have created 2 Fedora 21 images for the HummingBoard and Cubox-i.
I will create a XFCE based image too, soon.
In order to extend the root filesystem on this image, you need to run:
fdisk /dev/location-of-your-fedora-arm-media << EOF
e2fsck -f /dev/location-of-your-fedora-arm-media3
More information about Fedora on these boards can be found on this github page