They said in patch that it will take some time to pass in game before more wanderers will spawn. I tried waiting for about 2 weeks and didn't see anymore spawn, but I don't really know what they mean by equalize.
@SadShogun I assume this under your direction, if say there's 35-40 wanderers in the world will it still spawn more or do some need to die before more can spawn? A problem players often have is all the wanderers are really sucky, so it's not good if we're stuck with 40 rotten apples until they start to die.
- Implemented a new companion spawn behaviour that will try to equalise the available companions in the game. This fixes a bug that caused companions to be hard to find during late game (in-game time has to pass to equalise companions in older saves).