Android Police Said :
Google is launching a new collection in the Play Store that it will promote via banners and links called the Indie Corner. As the name suggests, it's a list of games created by indie devs. You can check it out right now on the Play Store; although there aren't very many games listed yet. Developers will also have access to a new video recording API that makes it easier for players to record gameplay and share it to YouTube in a few taps.
This feature will let users to play a Trailer like a little portion of the game to get to know what game is all about or how game will work in their phones.
In-game ads will also soon support portrait video, which will at least be less annoying that video ads that are playing the wrong way on your screen. Support for AdMob is improved as well.