Here's my take *IF* this is real.
With this leak and the Gematsu leak there's a lot that can be put together. The Gematsu leaker is presumably someone from Namco (I think they mentioned this in a post) or someone that's involved in the early production and conceptualization of the reveal videos. Taking this into account with Sakurai's previous post about running low on the number of reveals he had left, I'd say that prior to the Robin/Lucina reveal, he probably had 3 trailers left; the FE characters, Shulk and Chorus Men. I'm still not sure if he was trolling with the whole Monolithsoft tweet or whether he changed his mind after speculation ran rampant and replaced them with the FE characters instead.
Anyways, knowing his knack for unlockables and surprises, I still firmly believe that he probably had some hidden characters in the 3DS version he had no intention of revealing until they were unlocked. From this roster, that would be Bowser Jr, Duck Hunt Dog, Dark Pit, and the return of Ness, G&W, Dr. Mario, Ganondorf, Wario, Jigglypuff, and Falco (some of those veterans may be revealed before the game releases).
So then what about the Chorus Men? Well, this had been leaked by the Gematsu leaker, so this may still be a trailer that he intended to release BETWEEN the 3DS and Wii U release showing a unique character for the Wii U. But Sakurai has stated that the 3DS and Wii U versions will have the same roster but he DIDN'T say that the entire roster would be revealed when the 3DS version would be released. Hence, the DLC characters (Snake, IC, Lucas, Chorus Men, Wolf), and a way to continue to build anticipation for the Wii U version... after all, a lot (definitely not all, but a lot) of the excitement will be gone when the 3DS version drops. Sakurai has said that the Wii U and 3DS version will connect in some way, so maybe if you connect the Wii U version with the 3DS, then you'll get the DLC for free otherwise you have to pay for it. I don't know... just speculating.
Anyways, this is how I'd see the timeline:
- One more reveal with Shulk and maybe a veteran or two prior to 3DS version coming out.
- 3DS version comes out, Duck Hunt Dog, Dark Pit, Bowser Jr. secret characters, and the rest of the veterans are unlockable.
- Trailer during direct between 3DS and Wii U highlighting details of the Wii U version, including trailer for Chorus Men.
- Wii U version comes out, Chorus Men, Snake, Wolf, Lucas and Ice Climbers hidden/unlockable characters.
- DLC for 3DS version free if linked to Wii U version; DLC characters flesh out the missing spaces in the 3DS roster.
- Ridley fans cry themselves to sleep.
*IF* this is real.
