Just stumbled over [1] where ownCloud was replaced by NextCloud (and from a NC employee) in the description.
There is no single sign, neither at [2] nor at [3] that now only NextCloud is mentioned and not ownCloud. It seems the NextCloud product placement is working (yeah, its all about the Community...)
[1] https://gitlab.com/fdroid/fdroiddata/merge_requests/1880
[2] https://davdroid.bitfire.at/
[3] https://play.google.com/store/apps/details?id=at.bitfire.davdroid