People are asking about Wario so here's a timeline:
March 2018: Wario Land trademark is renewed a second time in less than a year and Wario Ware is trademark renewed too. Trademark includes the Virtual Boy game.
The Nintendo Direct that happened just a couple weeks ago gave us a great insight as to what’s coming up in the next year, but apparently, Nintendo hasn’t
nintendowire.com
February 2019: First time I personally start hearing Wario rumors.
June 2019: Vergeben publicly says he's heard Wario Ware is being developed for Switch.
For Super Smash Bros. Ultimate on the Nintendo Switch, a GameFAQs message board topic titled "Erdrick's status has began to become a little shaky" - Page 3.
gamefaqs.gamespot.com
September 2019: hear about cancelled 3DS projects being either ported or completely remade for Switch. I want to say someone made this information public around this time but I don't remember who.
November 2019: Imran Khan confirms the above and heavily implies the Fire Emblem 6/7 rumor is true too:
Nintendo is rumoured to be considering bringing a range of cancelled 3DS games to Nintendo Switch, including a previous…
www.google.com
Wario Land VB is often cited as one of the rumored cancelled 3DS projects.