No, the ran a consultation asking whether there is interest, got overwhelming support for it, but have not commented on it since.
> Please know this survey is used to help influence various topics – both on Python as well as other related topics that the comments started to bleed into. Given the passion, I want to be clear this remains an area of exploration for us, without any specific timeline.
However, we haven't heard anything since, but that kind of timeline wouldn't be unexpected for a feature of this scale - they'd be unlikely to announce anything until the project is at least near-finished, if they're working on it.
[0] https://excel.uservoice.com/forums/304921-excel-for-windows-...
Which if they also enable webassembly in the future is cool, because it means you will be able to run pretty much any language.