Recently Google has introduced Google Play, which is basically an interesting gamble to unify the services of movies, music, books and applications for Android devices.
Play Google aims to be an entertainment center where users can manage their Android applications and games, buy movies and books and music in one place without having to use separate services as was done before.
The main novelty is that the Android Market has been moved to Google as Google Play Music and movie sites and books to Android for now have geographical restrictions.
This attempt at unification seems very good idea, since it is not necessary to access other Google services separately for music or get games and applications. Google can try Play now and in some cases need to be in the United States for testing some services.