I think part of the issue with LKD is she had some sources who were very accurate and actually worked for Nintendo/Ubisoft, but she also had a lot of sources she didn't vet as thoroughly or said things that weren't corroborated by others. She did
a breakdown after-the-fact which seems to show how things all went down source-by-source. For the most part, the things she said sourced from Nintendo proper were accurate, but there were cases of plans changing or not being part of the reveal event (e.g. Mario + Rabbids and Splatoon bundle are real, but not at launch, the amiibos came in the first 6 months but not Smash, there allegedly was inner drama as to whether Zelda or Mario should be at launch, etc)...
All the stuff that turned out totally false though, no strings attached, was the stuff that came from weaker or single sources. I think she was just really green at all this and didn't do the best job at vetting everything and being more open as to where everything was coming from.
But yeah, not to make this thread about her or anything.
Regarding Smash for Switch, I think it's IntelliHeath who always says hope for the best but always brace for anything to happen. At the end of the day it is all rumour and speculation and that's not always infallible. I believe it'll probably happen though.
I'm expecting Virtual Console plans to be revealed at some point during the presentation along with "The following titles are available RIGHT NOW!" If not then, then maybe during Treehouse.