The latest I can find out is that Open Office is still on its way out.
https://www.theregister.co.uk/2017/04/28/apache_openoffice_not_dead_yet/
Libre Office was spun off from Open Office in 2010 when Open Office started getting neglected. Unlike Open Office, Libre Office is under a high level of active development. And is included in most Linux distros.
I was surprised that people still use Open office. But I suppose not everyone keeps up to date with computer news.
Edit: I've just been contacted by one of the Open Office guys who said that Open Office dying is fake news. So I wish them all the best.