On Wednesday, 16 October 2019 at 20:51:32 UTC, sighoya wrote:
> What's the state nearly year later?

There's a DIP proposing that i"" strings are lowered to printf-like format strings and arguments:
https://github.com/dlang/DIPs/pull/165

There's a competing proposal (not yet in DIP form) that allows more flexibility:
https://dpldocs.info/this-week-in-d/Blog.Posted_2019_05_13.html

There's already some Draft review discussion, but once it hits community review I expect the best design will be fought out.