Originally these packages were released as experimental packages to gauge interest with no specific dates for the final release. Thanks to the customer such as yourself, we know that there’s keen interest and have continued working on it. Be assured it is not abandoned.
As for the timeline, watch closely the announcements coming out in July. Alternatively, you can raise a support request to be notified directly about the release.
Support for Azure Functions has been released as a Public Preview and is production-ready, backed by support policy. Currently, supported triggers include