I think at least some of the REPLs came about with the new compiler architecture, yes. That isn't exactly new anymore, but new compared to the overall age of .NET.
Re:.NET Myths Dispelled
by juniordevv on Tuesday March 15, 2022 @05:30PM
(#30692011)
It’s intriguing, thanks
In the repl?
I have no experience with .net and it looks like these repls are new