Craftbukkit build 1597 AKA 1.0.1-R1 (which is compatible with Minecraft 1.0.1) has been released. We have installed it on all of the basic game servers. We are currently installing it on all Premium and dedicated servers. We (and everyone else) has been waiting a long time for this build, so we’re very happy it’s finally out.
As with all new builds of Minecraft/Craftbukkit backup your world and nether before changing version.
Please let us know if you find any plugins that do not work with build 1597.