I think it's still coming. I think the new wolfenstein that just came out was treated the same way. They want to show and talk about the best looking versions, xbox and ps4, and just release it on switch also. I think mortal kombat did the same thing also. I'm looking forward to the new doom also. So hopefully I'm right.
At least Wolfenstein Younglbood on Switch was always available for preorder since day one. Also, they actually showed some form of gameplay footage before release:
Minute 3:24. That blurry mess is obviously the Switch version....
Meanwhile, on the same video, on minute 3:11... DOOM Eternal appears with a CGI video. Also, it has no specific release date (coming soon), while Wolfenstein Younglblood does (July 26, 2019).
There's clearly something going on with DOOM Eternal on Switch. And Bethesda is handling this situation very poorly. They could have adressed the issue on the last Direct, but they didn't. It would have been very easy to say: "Hey guys, Panic Button is working very hard to make DOOM Eternal the best way possible for the Switch. However, they need more time so the game will be delayed X months. I hope you understand. Meanwhile, we are releasing DOOM 64 for the first time since 1997. Have fun with it. Bye".