- March 19, 2013: Plans for a second Equestria Girls film began on this date.
- April 12, 2013: Meghan McCarthy wrote the premise.
- May 21, 2013: A new premise for the film was written, followed by the outline on June 12.
- July 2, 2013: Meghan McCarthy wrote the first draft of the script.
- July 29, 2013: McCarthy began revising the script for the film.
- August 23, 2013: The song "Better Than Ever" was first performed.
- August 26, 2013: The production draft of the script was done.
- September 1, 2013: "Under Our Spell" was first performed.
- September 6, 2013: "Battle of the Bands" was first performed.
- September 24, 2013: A full animatic for the "Better Than Ever" song was made. It was completed on October 21.
- September 26, 2013: "Welcome to the Show" was first performed.
- October 2, 2013: "Awesome as I Wanna Be" was first performed.
- October 16, 2013: "Bad Counterspell" was first performed.
- October 28, 2013: "Tricks Up My Sleeve" was first performed.
- November 18, 2013: The opening song "Rainbow Rocks" was first performed.
- December 6, 2013: The locked draft of the film's script was submitted.
- December 11, 2013: "Shine Like Rainbows" was first performed.
- April 21, 2014: Fully animated cuts began being submitted for review. The last act was submitted on May 20.
- June 18, 2014: The first two songs in the film were finalized.
- September 17, 2014: The film officially completed production.
When a friendly showcase turns into a Battle of the Bands, there's only one pony to call... Princess Twilight! Canterlot High is hosting a musical showcase and Rainbow Dash, Applejack, Pinkie Pie, Rarity, and Fluttershy are going to be performing with their new band, the Rainbooms. But when the Dazzlings, a new girl group, arrive at CHS and convince everyone to turn the friendly showcase into a Battle of the Bands, tensions mount between the competing musical acts. A now-reformed Sunset Shimmer realizes that the Dazzlings may not be ordinary girls and are after something far more sinister than just being named Best Band at Canterlot High. The Rainbooms call on Princess Twilight to return to their world to help them perform a musical counter-spell so that they can win a battle that now determines the fate of the entire school!
Special Features (DVD)
- Audio Commentary
- 8 Prequel Shorts
This DVD also includes a trailer for all the Littlest Pet Shop DVDs up to date, uploaded to YouTube on May 30, 2014.
The film premiered on Discovery Family as one of the network's first exclusive movies on October 17, 2014. It later made more occasional broadcasts on that network from time to time, like on May 25, 2015, and also at the time before the next movie, Friendship Games, was about to air its first four animated shorts and the first 10 minutes of itself on August 29, 2015. The film also aired on November 5, 2016, a few hours before the premiere of Legend of Everfree, during the "Party with the Ponies" marathon on December 31, 2016, one week before the Season 7 premiere, on April 8, 2017, and after the episode "Movie Magic" on July 1, 2017. It aired again on February 10, 2018, and on March 25, 2018, the day after the premiere of Season 8 of My Little Pony: Friendship is Magic, and before the Disney Channel premiere of Zootopia.
The film last aired on December 31, 2021 at 9:00 a.m.
Vice Principal Luna
Cutie Mark Crusaders
On July 24, during the Comic-Con International 2014, a teaser trailer for the film itself was uploaded to YouTube.
The official trailer for the film was uploaded on September 22, five days before its release in theaters.
Another trailer was released on September 25, 2014.
On July 26, 2014, a sneak peek at the Dazzlings singing "Battle of the Bands" was uploaded to YouTube. Following this were four clips from the first few minutes of the film, uploaded from August 18 to September 5, 2014.
From July 2014 to April 2015, there were 16 music videos of songs from the first two Equestria Girls films. The first five were from the first film, and the last three were released as encore animated shorts. These three encore shorts are:
|1||My Past is Not Today||April 2, 2015||June 9, 2015||June 10, 2015|
|2||Friendship Through the Ages||April 2, 2015||June 10, 2015||June 29, 2015|
|3||Life is a Runway||April 2, 2015||June 10, 2015||September 14, 2015|
An animatic for "Life is a Runway" was made on July 23, 2014.
In March 2015, ten video clips of some of the main characters were uploaded to YouTube. They are:
- Twilight Sparkle
- Sunset Shimmer
- D.J. Pon-3
- Adagio Dazzle
- Aria Blaze & Sonata Dusk
- Rainbow Dash
- Pinkie Pie