I received an email from the Google asking to declare the advertisement status of my Google Play applications.
Here is the email I have received
Hello Google Play Developer,
At Google I/O, we launched “ad-supported” labels for apps in the Designed for Families program. Today, we’re announcing the expansion of this program to all apps on Google Play. Early next year, users will start to see the “Ads” label on apps that contain advertising, both inside and outside Designed for Families.
By January 11, 2016, you must sign in to the Play Developer Console and declare whether your apps contain ads (such as ads delivered through third party ad networks, display ads, native ads, and/or banner ads). After this date, the ads declaration will be required to make any updates to your apps. Please note that misrepresenting ad presence violates Google Play Developer Program Policies and may lead to suspension. You can visit our help center to learn more.
While developers are responsible for accurately declaring ad presence in their apps, Google may verify this at any time and display the “Ads” label if appropriate.
If you feel your app has been incorrectly flagged for containing ads, please contact our policy support team.
The Google Play Team
So from next year onwards it will be easy for users to understand whether an application contains advertisement or not, applications with advertisements will have a “Ads” label on the application. I have found many applications which have so many advertisements and is really annoying.
For developers, it is coming under the Pricing and distribution section