Well, I wouldn't say I have supreme confidence in Konami, but I want to pump the brakes a little, because here's what I'm left wondering...
First: What was the other Nintendo Switch game from Konami at E3? The official E3 site suggests two Switch games were supposed to be at E3 from Konami: "Action/Adventure > Nintendo Switch" and, later down the list, "Compilations > Nintendo Switch" (
https://mp1630k065.mapyourshow.com/7_0/exhibitor/exhibitor-details.cfm?ExhID=4XTDjeQv). Hyper Sports R is a next-gen Wii Sports-style
compilation game of various sports activities. So, was the E3 listing above suggesting that one game fit two categories--you could make a loose argument there because of the nature of sports in culture--or was the "Action/Adventure" game pulled or shown behind closed doors with some kind of extra restrictions to media?
Secondly: The embargo seems to have been about Hyper Sports R, yet Gamekult, if translations were correct, said that the game being shown was not PES or Hyper Sports R and deflected the questioning when asked if it was "horror-related." (You could still make an argument for some sort of development related to Silent Hill or Metal Gear Survive, but Castlevania also fits there.) So, there are some questions there...
If we're speculating a little, besides the trends* posted earlier in this thread that are in favor of an eventual Castlevania return at some level, one has to wonder if it was decided it was too early in development to really showcase it, or if Nintendo changed their Smash reveal plans related to Simon, and therefore the potential tie-in with a Switch Castlevania was pulled for a later showing in a Nintendo Direct. I mean, we had all that alleged evidence of Star Fox Grand Prix existing from Retro and therefore perhaps making a showing, and then nothing. But that doesn't mean that game doesn't exist, either.
Knowing what the Gamekult editor was referring to, and if they can talk about it, would be huge. But if Simon is ever confirmed for Smash from the earlier roster rumors that already turned out to be correct, I think Castlevania for Switch will probably happen in some capacity, because that will be one too many rumors around the alleged game that will have come true when you consider the RE2 Remake confirmation, too.
In closing, sure, Konami is primarily more of a casino- and sports-focused company at this point, but given that they did something like Super Bomberman R (and now Hyper Sports R), I don't think they won't do games under the right conditions--i.e. potential profits to be made from market timing-driven properties.
*In that earlier post, I forgot to add that Solid Snake is back in Smash (and Bomberman was added as an Assist Trophy), which is a licensing deal with Konami, showing some continued partnership on Konami's part with Nintendo Switch.
...Hmm...should I start a video game podcast?