It turns out that Mojang also changed how a key attribute (Item Health) was stored, which broke almost everything in terms of mods in a very unexpected way, so Bukkit is probably taking longer than usual to update in part because of that.

It’s a dev build, which may nor may not be Jon’s cup of tea. Mojang didn’t just rock the boat with this update, they sort of ran it into a mine, half sank it, floated it and rebuilt it completely. Everyone else rather much has to put their mods up on blocks and recode them in kind. Might be awhile, and really, the horses aren’t that spectacular anyhow. At this point, Mojang is pretty much just incorporating old ideas from modders into the game, anyhow. I’m still waiting to see if they pull down half the ideas from the Voltz pack at some point.

I updated it the other day, not really sure what will work and what won’t.