On NI website there is a page with CVI Life Cycle Policy, but it's quite outdated.
LabWindows/CVI 2017 (released more or less one year ago) is not listed.
Moreover it would be helpful having a roadmap for CVI.
As far as I know, CVI 2017 SP1 has not been released yet (and I don't know if it will be released, and when).
From the developer perspective, it's not clear enough if CVI is actively developed (and towards what direction).