At the beginning of every month, the CyanogenMod team releases a milestone build, which primarily focuses on stability. Like clockwork, the team has started rolling out this month’s M release of CM11 for all its supported devices. 

CM11 M9 includes a number if bug-fixes and support for additional devices including the HTC One M8, the Xperia Z2, Z2 Tablet and more.

Below is the official changelog of the M9 release highlighting the important bug-fixes and changes-:

* Themes support for additional UI elements
* Heads Up Notifications – Bug Fixes
* Lockscreen – Allow doubletap to sleep when using secure keyguard
* Torch – Improve performance
* Safe Headset Volume – prompt when interfering with 3rd party device (Jawbone, Square, etc)
* Center clock support
* Quick Settings – respect locale changes on additional tiles
* Proximity Wake-Up support – prevent accidental wake-up of device by checking to see if proximity sensor is blocked (eg. Device is in a bag or pocket).
* Spam notification filtering – Set notifications to auto-ignore based on content (perfect for those pesky games that want you to ‘Save 20% on our new game’). Long-press offending notification to set as ignored; manage in Privacy settings.
* Settings Search – Additional improvements and highlighting
* Data Usage Info – Add support for CDMA devices without sim cards
* Bluetooth – Add additional A2DP profiles
* Bluetooth – Disable AVRCP 1.5 by default (fixes various car unit compatibility)
* Email – Fix saving attachments to storage for POP3 accounts
* Translations (Thanks CM Crowdin Team!)
* Account for Play Services induced wake-locks
* Fix encryption on some LG Devices
* Dialer – add support for Korean and Chinese to smart-dialer

The builds are currently being churned out by the CM servers and can be found here once they have been uploaded by the server.