YUphoria and YUreka are getting CyanogenMod 12.1 nightly support
Yuphoria is a mid-range device that competes with Moto G and other similarly constructed devices. Its nightly is codenamed lettuce and it brings about CyanogenMod 12.1, a custom ROM version based on Android 5.1. The ZIP archive measures 365MB.
The Yureka also has an update in the form of a 12.1 nightly codenamed tomato. This device has a more powerful Snapdragon 615 and a slightly larger price as well. Its nightly measures around 366B.
These two Yu devices run on Cyanogen out of the box which means that flashing a new CyanogenMod version will not make such a striking difference as it happens with changing TouchWiz or Sense UI for example.
The nightly builds are updated on a daily basis and bugs are sorted out as soon as they are signaled. Stability issues may appear if you do flash this nightly, so tread carefully.