I think that in 1.8 the terrain generation was totally redone, meaning that the new areas that are now being generated are using a completely different system.
Are we updating to 1.0 soon? :D
So.... Bukkit haven't made an official build yet for the update but there are some dev builds that some plugins have been updated for the dev builds.
Do people still care enough for me to sort it all? Even one Yes and I'll do it on Monday.