New animatronics are good guys that are there to destroy the old animatronics. Putting the old Freddy mask on will cause them to mistake you for an old animatronic and they'll kill you.
Old animatronics are organ harvesters and are out to kill you. Putting the mask on makes them think you're old Freddy and they'll leave you alone.
NOPE.
I haven't tried it yet, but that fan theory was so, so wrong, and here's what's been confirmed so far.
Spoiler: if you want to be surprised (click to see content)
- The new animatronics officially have a "Toy" title (ie: Toy Freddy, Toy Bonnie, etc). The old ones don't have it. The only exception is the new Foxy who is now known as Mangle.
- No power limits! Hooray!
- However, now you have a flashlight for the cameras and for looking down the hallway, and THAT can run out of power.
- Additionally, now that you can't die by running out of power, you can instead die by not cranking a music box in one of the rooms, which is home to a brand new animatronic: The Puppet.
- There's also another new animatronic called Balloon Boy. People are still trying to figure out what he does, but he apparently can't attack you directly. Instead, he can apparently attract animatronics to him.
- Freddy is active on the first night.
- The Freddy Mask is meant to prevent both the new AND old animatronics from attacking. You have to wait for them to stare at you with the mask on and leave before you're safe to take it off again.
- HOWEVER, the mask doesn't work on the new Foxy. Now you can only stop him by shining a flashlight at him. Same for Mangle apparently.
Apparently the pattern from FNaF1 isn't going to work, and it seems like you really do need to keep an eye on them to limit their movements.