Motorola Moto E 2nd gen will get its own update to Android 6.0 soon! The bad news is that the OTA will not reach US devices. This news completes the news coming back in October, when Motorola announced their Android 6.0 Marshmallow update list of devices, a pretty skimpy list at the time.
In an update to the original post (which you can see in the source link below) we can see that Moto E 2nd gen was added to the list. The US and Chinese versions of the device are not getting the update however; only Canada, Europe, Latin America and some parts of Asia will get an update.
On a side note, if you have a Moto X Force, a Maxx 2 or Turbo 2, you should be happy to find out that your device will also get an update to Android 6.0 Marshmallow.