Well. I understand that in C3 some tile configurations are updated. It's next version and finally they correct some known issues.
For example I like new spring tile (C1 lower know it from GQ11) with separated fields.
What I miss is two fields on lake tile, because when it's last tile in river deck, player playing tile before last one has advantage, because he know, that next tile will join fields on both sides of river. So he can place meeple on field as farmer with better chance to create bigger fields then other players.