CyanogenMod is perhaps the most popular custom ROM available, and perhaps the oldest. CyanogenMod has been around since almost the beginning of Android and has continued to support smartphones, tablets and other Android devices well past the time of the OEM's support. Based on AOSP, with some additions thrown in, CyanogenMod is a great custom ROM to use, and one of the most trusted. And now, CyanogenMod 13 Nightlies - which are based on Android 6.0.x Marshmallow - are now available for a slew of new devices including the Wileyfox Storm, Wileyfox Storm, ZUK Z1, Motorola Droid Bionic, Motorola Droid 4, Motorola Droid Razr and the Motorola Razr (the non-Verizon version). Quite a few older Motorola smartphones there, all running on the old TI OMAP processors as well.
The Droid Bionic, Droid 4 and Droid Razr have been abandoned by Verizon and Motorola long ago (these were all made before Google took over Motorola and released the Moto X in 2013, so they are at least three and a half years old). However the folks over at CyanogenMod have not forgotten about these devices. Some of the first smartphones with 4G LTE at Verizon. In fact, the Droid Razr was marketed as the thinnest 4G LTE smartphone, and the Droid Bionic was Motorola's first 4G LTE smartphone. And now they can all have a fresh taste of Android 6.0 Marshmallow. Although don't expect CyanogenMod to run 100% smooth on these older devices, as the hardware isn't quite as good as what we have these days with the latest and greatest from Motorola and other companies.
Wileyfox on the other hand, is a British manufacturer who is one of Cyanogen Inc's newest partners. They launched the super-cheap Storm and Swift in 2015. Both of which run Cyanogen OS, so it seems only fitting that the devices get a dose of the open source CyanogenMod 13. Additionally, the ZUK Z1, which was Cyanogen's second smartphone behind the OnePlus One, is also getting CyanogenMod 13 nightlies as of today. The ZUK Z1 is a great smartphone as well, and if you perhaps prefer to have CyanogenMod over Cyanogen OS on your Z1, then now's the time to flash it on over to CyanogenMod 13 and get an early taste of Marshmallow as well.