Details about the first 15 episodes of Power Rangers Super Megaforce is finally revealed thanks to Kyl416 of Funaroboard! Based on the description, it seems that the show has at least 2 episodes featuring past Rangers!
Super Megaforce
Gosei presents the Rangers with new Morphers that unlock a Super Mega Mode, which will allow them to access the powers of every previous team of Power Rangers.
Earth Fights Back
While the rest of the team works with the civilians to rebuild their city, Troy stumbles upon a plot by the Armada to launch missiles at major cities throughout the world.
Blue Saber Saga
After being humiliated in battle by a master swordsman monster, Noah suffers a crisis of confidence and questions his worthiness as a Ranger.
A Lion’s Alliance
Determined to strengthen their defense against the Armada, the Rangers head to a mystical airborne island named Animaria in search of the wild yet powerful Red Lion Zord.
Samurai Surprise
When a powerful monster named Matacore is sent by the emperor to take on the Rangers, they face a challenge like never before. Luckily, help comes in the form of a mysterious Samurai visitor.
Spirit of the Tiger
When the Rangers face a monster with a magnetic power to wrench their weapons away from them, Jake and Emma turn to quiet local Zoo Keeper named Casey to learn a special form of martial arts that helps them channel their personal animal spirits.
Silver Lining, Part 1
The Rangers are shocked and mystified when they discover the presence of a new Silver Ranger. Is this strange new visitor an ally or a foe?
Silver Lining, Part 2
Orion, the mysterious Silver Ranger, explains his past to Gosei and the Rangers and how he obtained the Silver Ranger Key.
Power of Six
When his Ranger teammates are sidelined by an energy-sucking monster, Jake must put aside his jealousy of Orion and help him use the combined power of the past Sixth Rangers to defeat this terrible foe.
The Perfect Storm
The Rangers are sidetracked from their fight against an invading monster when Tensou is struck by lightning, develops amnesia and wanders away from the Command Center.
Love Is In the Air
When a love potion accidentally makes the evil Levira fall in love with Jake, a jealous alien targets him for destruction.
United as One
When the Megazord is damaged in a fight against a monster who uses his staff to steal human's happiness, Emma uses unconventional methods to defeat this unusual monster.
The Grass is Always Greener or Bluer
Jake and Noah find themselves literally standing in each other’s shoes when a body-swapping monster named Tranceferer switches the two Rangers so that they are inhabiting each other’s body.
In the Driver’s Seat
Lured away from Earth to investigate an emergency signal from Corinth, the Rangers discover they’ve been trapped in the alternate dimension by Professor Cog, who attacks Earth in their absence. Their only hope to get back home lies with the wild Turbo Falcon Zord, who they must tame in order to return to their dimension and save Earth.
All Hail Prince Vekar
The Rangers finally battle the evil Prince Vekar face to face when he comes to Earth armed with his very own Megazord.
UPDATE 1 (12/19/13): Added a new episode summary. Special thanks to RangerCrew's nightmere10.
[Special thanks to RangerCrew for the heads up!]
