Android Police’s Artem Russakovskii digs into Google’s code and determines the following:

The most significant under-the-hood and probably not active yet addition to Gmail 4.6 is ads. Yup, ads are most definitely coming to Gmail for Android which managed to stay ad-free all this time, unlike its web counterpart.

His conclusion?

After all, it seems almost silly to not monetize a core app with an absolutely massive install base – between 500 million and a billion.

Exhibit A for people wondering why many of us prefer Apple’s business model.

(Via The Verge)