Let's start with the good news then. The following devices will see the newest version of Android

• 2015 Moto X Pure Edition (3rd gen)

• 2015 Moto X Style (3rd gen)

• 2015 Moto X Play

• 2015 Moto G (3rd gen)

• 2014 Moto X Pure Edition in the US (2nd gen)

• 2014 Moto X in Latin America, Europe and Asia2 (2nd gen)

• 2014 Moto G and Moto G with 4G LTE (2nd gen)

• DROID Turbo

• 2014 Moto MAXX

• 2014 Moto Turbo

Add to all of these the Motorola-made Nexus 6, which however will get its
update straight from Google (as is customary in the Nexus program). You
may have noticed that neither generation of the affordable Moto E has been
included, nor the first-gen Moto G and Moto X. And while these two may be
considered too old to update at this point, the second-gen Moto E is only a
few months old.

An actual release timeline for the updates for the devices that are getting
them hasn't been outed yet, but Motorola says information on timing should
become available "in the coming weeks".

Moving on, the company has also announced that it's going to stop
developing some of its apps and services that have functionality that's now
either built into Android itself, is very similar to Android features, or for
which there are many third party alternatives.

Hence, Moto Assist will be gone in Android 6.0 Marshmallow, along with
Motorola Migrate, and the Google Chrome extension found in Motorola
Connect. The focus here is apparently on keeping things simple and
bloatware to a minimum, and we assume most people would agree with this
philosophy.

Source:gsmarena