As @jkp noted, at this point the Aeotec hub is the replacement for the V3 hub. In fact they are essentially the same device, just with a different logo.
Samsung has decided it no longer wants to be in the business of selling and supporting smartthings branded hardware, so they are turning that over to other partners. They will continue to offer the app and the cloud platform.
Official announcements in the following thread. ( The topic title is a clickable link.)
No one has said anything about the Wi-Fi router model and it’s already several firmware versions behind the other model, so it looks to me like it will probably be discontinued, although no one has said that officially.
Certainly if I personally was going to buy a new smartthings compatible hub now, I would get the Aeotec version.