I am going to start numbering the spoilers and clumping them together. Well if you don't want to be spoiled don't click 'click here.' If you do want to be spoiled click 'click here.' There are a couple of pictures on the set of Power Rangers Super Megaforce. For people who follow me and other PR fans on Twitter, this is no surprise.
@donas007 for finding this image, it is of the Black Wild Force Ranger in costume preparing for a stunt. My buddy and fellow Power Force member MorphinLegacy thinks it might be an indicator that Jack Guzman (Danny Delgado) is going to guest. My guess is that it is a Megaforce Ranger changing into a past Ranger like Gokaiger changing into past Rangers.
This is from Instagram, I don't know if it is from Ciara Hanna's account. But basically fan rumblings that Jason Smith (Casey/Red Tiger Ranger) was guesting on the show and frequent tweeting with Ciara Hanna. Here is a confirmation as they are on a set and Jason is wearing a thick red jacket. I guess the Tiger is out of the bag. Sorry for the pun.
Fellow Power Force member Mr. Yellow found this on someone else's Instagram.
Wardrobe including Megaforce suits.
Old masks: A Monster, Finster head and the helmet of Mystic Knights of Tir Na Nog. Doesn't mean they will use them.
Donatello Stunt, it must be the Dontello from Saban's Ninja Turtles Next Mutation, it doesn't mean they will be used.
Mask of the Astronauts from the first ep of MMPR.