Tribu is now compatible with 1.6.4
Game can be auto started, see the doc. There is already a ticket suggesting running several game at once. But it's an hard work so it'll take...
The 0.6.3 release has been posted yesterday on BukkitDev and will be available to you as soon as bukkit staff approves it ;-)
0.6.3 Public beta 1 is available on dev.bukkit.org
An update is coming ;-)
Nothing for now, sorry
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