This has certainly been an interesting week with the release of the Equestria Girls Trailer.
So far the movie looks great with its animation and design and I can bet I will enjoy the music in the movie ,written by Daniel Ingram of course, and the story by Meghan McCarthy. I have seen other reviews so I thought I'd give my review on it.
Other Reviews you should see
GoldenFox17
https://www.youtube.com/watch?v=jSa5ahLNv44
Theorybrony and Digibrony
https://www.youtube.com/watch?v=Wzs_vM_SqcA
Bronycurious
https://www.youtube.com/watch?v=ZogNJoHprPQ

Digibrony's Observation of Destiny 
https://www.youtube.com/watch?v=ljIXLLp3E58

I don't own any of the Clips associated with Equestria Girls