Android Central

A handful of select devices are getting CyanogenMod 10.1 "M-Series" builds starting today. These builds are meant to be released less frequently, and are considered stable for daily use. You can think of M-Series builds as a step above nightly builds, which often have many bugs. The following devices are supported for now:

The CyanogenMod team says in its post that it is on-track for a stable release of 10.1 soon, and these M-Series builds are a good step in the right direction. If you have one of the above listed devices and are interested in the new builds, head to the source link below and grab your downloads.

Source: Cyanogenmod