Lenovo a Chinese smartphone manufacturer starts rolling out Android 6.0 Marshmallow update for A7000 in India Over The Air. Earlier Company Roll Out Android marshmallow to its K3 Note.
Coming to the Lenovo A7000 marshmallow update , it comes with a build number “A7000-a_S153_151127_ROW_TO_A7000-a_S223_160405_ROW” and it weighs 1359 MB in size. It includes Google Now on Tap and Doze, App permissions like now you can install the apps on SD Card. However you should have around 2GB of free space to download and install the update.
If You did not get the OTA notification yet than check it manually by going through the Settings > About Phone > System updates > Check for update.