Do you have an idea of when this will be scheduled, if not, do you have guidelines on how to implement it, so I can try to do a pull request ?
What I can say is that this not scheduled for the next release and it is not coming in the next month.
About the syntax, there isn't any Linq extension method to support for it for other dialects (Contains() is not an option) that I know of, we should create a new one.
If you need it now, you can use a prepared statement:
I had tried unsuccessfully by binding arrays, I did not think of Tuples.
I implemented it this way and it works great, thank you.