The devs have pretty much deviated off the timeline a little bit. Azuregos came out, but not Kazzak. Dire Maul is supposed to release on April 22nd (going off of information from the PvE progression thread). The dev's did update us with our concerns on the current timeline, but the future is still wrapped in obscurity since there weren't specific dates for future content release.
As for the item changes. Who knows D: Azuregos is technically patch 1.3, but so is Kazzak and Dire Maul. I'm assuming they will come when one or both are released, but again....no confirmation on if that'll happen or when that'll happen.
This is from Viper/Daemon:
Viper wrote:http://forum.nostalrius.org/viewtopic.php?f=2&t=4
As a reminder, this is not a final timeline. You should rather consider it as an indicative timeline.
viewtopic.php?f=2&t=6406Additional Note:
Timeline has been adjusted based on server overall progress and number of players reaching level60.
Consequently, Azuregos will be released this weekend, Sunday 10PM server time.
Kazzak, Dire Maul and Black Wing Lair will be available in the coming weeks.
For a few numbers of guilds, it will be available starting next week on our ISVV server, to check if everything is working properly: content need to be equal to perfection for our community.
If your guilds want to be part of this ISVV tasks, and have the size, availablity, knowledge and skills needed for these new challenge, feel free to contact an administrator as soon as possible.