Hey guys !
That's right it's already out !
As usual the main servers will be updated as soon as a stable bukkit 1.4 release is available for them.
You can now connect to the main servers using a 1.4 client.
In the mean time we invite you to come discover the new features with us on our 1.4 vanilla temp server.
Main servers: MT.GG
1.4 temp server: MT.GG:1337
More news concerning Minecon & other stuff coming soon !
See you !
EDIT: Our servers are now allowing 1.4 clients connections. We are using a patched 1.3 server client to make this possible. Which means that the 1.4 features are not available yet. This is the most we can do at the moment as there isn't any bukkit version released for 1.4 yet.