Yesterday, two new camera modules quietly made it onto the https://store.gumstix.com/ Gumstix storefront.
The first is the https://store.gumstix.com/caspa-hd.html Caspa HD, a 5MP 2-lane MIPI CSI-2 OV5670.
The second is the https://store.gumstix.com/caspa-4k.html Caspa 4K, a 13MP 4-lane CSI-2 Sony IMX214 with auto-focus and an 'HDR video' feature.
I have hooked these up and https://youtu.be/K3wpjrBoZrA tested them out and they are working great -- WITHOUT any additional software or drivers. If you've got the latest firmware (1D1) and an up-to-date Ref-OS-IoT (1703) disk image, they'll work out of the box.