The OneNote (left), Skype (centre), and Twitter (right) Mods

Mods that integrate into apps, such as Skype, Hyperlapse, or OneNote, are automatically enabled. For privacy, lock screen mods need to enabled manually. To do that on Cyanogen OS 13.1, go to Settings, then Lock screen and select 'Lock screen mods.' Tap on one to enable or disable it at your will.

If you have a OnePlus One, check the system menu to see if the update has got to you yet. We believe it's around 396MB. Non-US folks should also know that Cortana is only available in the States for now.

Thanks: Sathish Guru V and Shalvin Joseph

Source: Cyanogen blog