M6 Snapshot builds of CM 11 are being pushed to servers now, according to a blog post from the folks over at CyanogenMod. There are quite a bit of changes.
Milestone builds are usually more stable than Nightlies, so you should give it a try if it’s available for your device. Not every phone and tablet that gets a nightly build will get the M6 treatment, especially if the managers are having trouble with any particular hardware or software issues. So check here, and see whether it is available for your device. If you’re going to flash this, Don’t forget to flash the Gapps to get the Google Apps.
Here’s the Official Changelog,
Quiet Hours – Fix longpress QS tile option
Voice+ – Integrate into settings (under Wireless and Networks > ‘More’)
Blacklist – Add provider permissions
Lockscreen – Fix custom wallpaper crashes and album art issues