Originally posted by blankitosonic:

old and present seeds are already compatible for future biomes , them already are in the world : mistlands , ocean ( expanded ) , ashlands , deep north . But are almost empty because are under developed
future updates surely fill these already generated biomes ( so i advise to not build on them because surely will be wiped after future updates that fill up the place )
this game isnt like 7d2d where any seed becomes useless after a new alpha version

have you any dev quote confirming that? Because I know from friend there are some placeholders - but that doesn't mean it will be compatible. From what I know every biome detail is generated of a seed (every tree, resource, etc) so I'm skeptical that it will update retroactively, because right now, as you say those biome placeholders are empty. I need first hand dev confirmation before I commit to anything.