What is the v4 release schedule?

I have seen a lot of issues tagged with v4, and I am looking forward to the release of the v4 version. When will it be released? Don't need a specific date, just want to know the approximate, such as the middle of next month or something?

There is no date planned as of now for v4. In general, v4 tag is associated with crash associated with SDK shutdown, i.e, use-after-free scenario. This will eventually involve SDK redesign and probably API changes.