Well, Android 7.1.1 Nougat Software update for other Motorola Smartphones do brings latest System icons but you will not be getting any new default Pixel-like launcher. However, You can now download the Official Moto App launcher, sideload, and get a taste of Pixel-like launcher with Google now Integration.
Thanks to XDA member, Junior Passos for uploading the Moto App launcher from the Moto Z2 Play. As a warning and reminder, we are not the providers of these files and cannot assure you that they are safe. But, the launcher works perfectly on our Moto Z Play running Android 7.1.1 Nougat and Moto G5 running Android 7.0.
Direct Download Link: Moto App launcher (.apk) (Via XDA)
Let us know in the below comment section if the Moto App launcher is working perfectly on your Moto device.