I just discovered this post from Nov 2020:
What to expect now?
First, kartaview.org will be the new home for the project. In the next few days, the other pieces like the mobile apps, JOSM plugin, Github repos will be updated as well. Some external projects integrating KartaView will probably need a bit more time to update the name, so most likely we’ll spot OpenStreetCam in tools and other corners of the internet for a while.
A reborn interest in mapping by Grab (the owner of KartaView)? Perhaps partly influenced by FB x Mapillary acquisition last year?