CyanogenMod 13 to support T-Mobile's Wi-Fi calling?
CyanogenMod 13 is based on Android 6.0 Marshmallow, and a release date for the ROM is not yet known. We could start to see alpha and beta versions of the latest Cyanogen build surface within months.
T-Mobile's Wi-Fi calling allows T-Mobile subscribers who are stuck in an area with a poor cellular connection, to make and take phone calls over a Wi-Fi network. It also allows for the sending and receiving of texts over a Wi-Fi network as well. Having the feature on CM13 might give T-Mobile subscribers who like to customize their Android phone, the impetus to flash Cyanogen on their handset.
source: +RomanBirg via AndroidPolice