100% true.I haven't tried any of the new seeds yet, but it certainly sounds interesting! I even heard that one of the seeds has the soundtrack songs for Terraria: Otherworld, very cool (if it's true)!
that would be the "drunk world", the one i mentioned with both world evils and all the ores available in it.
the seed is 1.4's release date: 5162020
you start with the party girl and visiting that world actually permanently unlocks the option to use the otherworld soundtrack in all your other worlds, if you want, by speaking with the party girl.