When will Bukkit be updated for Minecraft 1.6?

Update 2 - June 23, 2011 at 9:12PM EST:
New Recommended Build #928.

This Recommended Build addresses a few API issues and provides Plugin Developers with more events to work with, allowing more awesome plugins to be made. Unfortunately, this new RB WILL break some plugins (mostly plugins that deal with controlling a player's movement - details can be found near the end of this announcement). As always, please be sure to backup your server before updating just in case!

See this post for more information.

Update - May 30th, 2011 at 5:55PM EST:
Since the release of Minecraft 1.6, we've seen quite a few rapid-fire bugfix updates from Mojang addressing issues the community has noticed and reported back on. While we're glad Mojang are on top of things and getting updates out there quickly to improve the community's experience, this does result in extra work on our part since we have to re-do some of the work we've completed for the previous update. As a result, I made the decision to hold off on getting a build out for Minecraft 1.6 until we were able to evaluate the update and decide if that is what we feel we should do or not.

Over the weekend, that is what we have been busy doing. Unfortunately, I was out of town and unable to handle the situation as much as I would have liked, leading to a lack of communication on our part with you guys, our community. Nevertheless, my team was happily and diligently working on the update and in regular contact with me. Still, I would like to apologise for our lack of communication, I simply was not in a position to do so.

That being said, we have noticed a few issues with the update that we've been able to address, so we are leaning towards bringing out a build for Minecraft 1.6.5. Though this build may not address all the issues we've found, it is still usable and produces a playable server with a decent experience. However, I am not yet sure if this build will qualify for recommendation.

Please bear this in mind when using the build: it is not fully supported (though we welcome detailed, useful bug reports) and not recommended (we can't guarantee stability) to use. There are some Minecraft vanilla issues that Mojang need to address that are beyond the scope of our project to fix and we are still touching things up (like Nether/multiworld support).

If you want to use the build we'll be pushing soon, please backup your server and make sure you understand the risks before doing so. Once again, we cannot guarantee that it won't eat your cake or spawn tiny creeper babies that take over your world.

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As I'm sure we're all aware, Mojang released Minecraft 1.6 today (Thursday, May 26, 2011) around 5AM EST and we've been hard at work getting a build out that is compatible with Minecraft 1.6 out. Since the release, Minecraft has seen quite a few small bugfix updates addressing some unnoticed bugs and we've pretty easily kept up with them. Unfortunately, there appear to be some issues with the update that is making the game unplayable for SMP players, so we've decided to wait for a bugfix update before we recommend any builds.

Will there be a CraftBukkit for Minecraft 1.6?
Given the reports of showstopping bugs present in 1.6, there's a high chance a new bugfix update for Minecraft will be out tomorrow or even several times this week. As a result, it is unlikely we will be releasing a Recommended Build for 1.6 until we have something stable to work with.

That being said, we recommend everyone stay on 1.5 for a while until the showstopping issues are fixed and we can get a new, stable, compatible build out.

You can already get CraftBukkit for Minecraft 1.6.4, but it is unsupported and not recommended.

I'll be scouring the internet for further reports on how Minecraft 1.6 is performing, but preliminary research and our own testing has revealed it as unplayable due to chunks sporadically loading or not loading.