Yes, it's something we're considering doing, along with or as an alternative to OTRv4, but no, no work has started.
The only thing on the immediate roadmap is to get an audit, and hopefully be able to take the application out of beta.
Given that, I wouldn't expect it in the next weeks or months. Sorry that I can't be more precise.
We understand it's a desirable feature though, since so many are asking for it.
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