You know, I might be in the minority, but after guessing pretty much everything right bar leaving out Rosalina and now getting Chrom wrong, I find it a bit odd how people are suddenly acting like Gematsu has been completely blown out.
Honestly, I'm still on Team Gematsu...considering Sakurai mentioned how early in development Greninja was just an XY Space, I don't think it's beyond the realm of possibility that at one point it was simply "Chrom" being reported, or perhaps it was "Fire Emblem Awakening Protagonist", and the leaker assumed it to be Chrom since that makes the most sense. Lucina also seems like a pretty late addition since she seems to just be a clone of Marth more or less, explaining her absence, and possibly Dark Pit too since he seems like he'll be a clone of Pit.
I also can't fault the leaker assuming it was Shulk being revealed when the Xenoblade guy also re-tweeted the announcement, as if they were expecting Shulk as well.
I think people are being a bit reactionary thinking that today's confirmation opens up the floodgates for like King K. Rool and Ridley and tons of other characters, when in reality Gematsu is probably mostly right and we just have Shulk, Chorus Men (or perhaps another Rhythm Heaven character), and maybe Dark Pit and some other low-effort clones left.