I am running 16.3.4 so I assume it already should include updates from an earlier preview version?
Mentioned here
https://devblogs.microsoft.com/visualstudio/say-hello-to-the-new-visual-studio-terminal/
This is all I see under the 'View' menu
...and this under 'Other windows'

See this in the 'preview features' section of Environment. Terminal nowhere to be found?

