Not from me, but from a supposed NoA employee. Chose to reveal as little about himself as possible, just because what happened with the recent leaker, which he says is HUGE deal right now. I bolded the big stuff.
"- The leak is legit, which I think is common sense by now.
- There are in fact FOUR characters left to be revealed, three newcomers and one veteran.
Ridley - unlocked by going through classic mode 10 times on any difficulty with Samus or Zero Suit Samus OR win a match on Pyrosphere as Samus or Zero Suit Samus (Wii U) Nope
Isabelle - you unlock her when you summon her assist trophy while playing as Villager OR summon her assist trophy 10 times total This is where you went fake
Dixie Kong - unlock her by playing 5 team matches with Diddy Kong as either player OR complete Smash Run as Diddy Kong Not likely
Mewtwo - 20 hours total play time in versus mode or 500 total versus mode matches Not likely at this point
- Here's how you unlock the other characters shown in the leak.
Bowser Jr. - achieve a high score of 50,000 OR higher is Target blast as Bowser or complete Classic Mode on any intensity
Duck Hunt - get a perfect clear on Target Blast with every character OR play 250 total versus mode matches
Dr. Mario - complete Classic Mode or Smash Run with Mario without losing any continues OR play 100 total versus mode matches
Dark Pit - lose 10 matches (any mode) while playing as Pit OR lose the finale of Smash Run while playing as Pit
Shulk - complete Smash Run on the highest intensity while playing as R.O.B. OR complete classic mode once as each newcomer (rosalina, palutena, robin, lucina, little mac, greninja, villager, wii fit trainer
- Snake is cut, but he and Gray Fox do have trophies
- Isabelle is a Villager clone with a few differences. Her Down Special grows a fruit tree that bears and drops fruit instead of letting you chop it down for instance. Dash Attack she comically trips, letting fly a barrage of papers that stagger but do little damage. Nintendo is pushing to make her and Villager the faces of Animal Crossing, as is further shown with the new MK8 DLC.
Clone of a newcomer. Totally legit.
- On Ridley. It's a new model, but mostly based on the Other M design but in smaller and in flight. He looks more like a gargoyle or something flying. Side Special is a swoop that passes through opponents and makes him face the opposite direction after it ends. If you use it again back that direction without the ending lag. Down Smash he floats into the air with his tail pointing downward then slams down, implanting anyone hit. Forward Aerial is a flip kind of like Charizard's Neutral Aerial from Brawl. He plays like Wolf, but using the same new always airborne mechanic that Bowser Jr. does. he looks great. hes flying mostly upright, with his arms and legs in a semi-crouched position, tail twitching behind him. hes the stage boss. he just enters in a cut-scene attacking whichever player is "winning" the match and then stays to fight one stock. Sakurai is aware that he is highly requested in the west, thats why he is being treated this way.
Stop pushing him
- Unless there is future DLC, as of right now, Ice Climbers, Lucas, and Wolf are cut for good.
- Isaac is once again an AT, the same as he was before.
- Details on Duck Hunt's gameplay
The dog runs on all fours with one duck circling above. They take turns performing moves. Up Special the duck starts flapping and leaves the dog behind, he has to jump up and bite onto its feathers to be lifted up. Down Special the dog sniffs the ground and gets an exclamation mark over its head, letting it move faster while running toward the nearest opponent at the time. The effect goes away after a few moments. Side Special the dog rears up on its hind legs and motions with its paw, sending a different duck divebombing forward. It pierces through opponents and flies back. If it hits nothing the duck sticks up in the ground on its beak and has to be recollected to use the move again. Neutral Special a bush sprouts up at the location. Pressing B again lets you hide in it. While hidden a cursor appears letting you fire in a certain radius. If the bush is attacked a few times it disperses and reveals you. You can only have one bush on-stage at a time. Final smash is like the above, but with a much larger radius and firework effects as it ends.
This all just seems like a confusing move set and not Smash-like. Like the Down Special and the Side Special.
- Mach Rider is a trophy and Impa isn't in the game at all to my knowledge.
- DLC isn't being discussed right now, or if it is, it's being kept very secretly. The plan right now is to worry about DLC after release.
- Hades (basically Tabuu reskin) is the final boss of classic mode on the highest intensity
Hades = Tabuu
- Dr. Mario's Final Smash is a slower thinner copy of Mario's and Mewtwo's is Mega Mewtwo Y, just a powered up form like Lucario's Mega Evolution.
- There isn't a Rhythm Heaven rep, no clue why every fake leak seems to be pushing them so much. A Rhythm Heaven character was considered but that was an amalgamation thing and never made it very far. The Sneaky Spirits are in Smash Run because Sakurai wanted more handheld enemies. There are also enemies from Tomato Adventure and For the Frog for Whom the Bell Tolls.
- Dixie is a Diddy clone with a few differences. She uses her hair for a few moves and is a little slower.
- Sakurai doesn't consider any characters clones at all. They are attribute swaps. Easy to make characters that buff up the roster without as much man hours.
- No info on reveal dates, not my department."
It's certainly hype-raising, but, as a text leak, it's got no more legitimacy to it than any other text leak on principle. Heck, I'd love for it to be true, though - it would be beyond ideal if it were. 
It just doesn't have a great deal that makes it worth believing just yet.
