The latest development update for Age of Conan: Unchained has been published on the official site. In it, the team lays out plans for patches and updates from v3.1 through the release of the next adventure pack and v4.0.

• v3.1 is mainly focused on the Dreamworld engine and behind the scenes technology issues. It has been delayed somewhat to allow the team to "iron out any kinks" they've encountered. It is expected to deploy soon.
• v3.2 will include the House of Crom dungeon, new instances and world bosses, new social areas and more. The Jade Citadel, a new Tier 4 raid, will also make its appearance in v3.2.
• v3.3 This update will conclude the Tier Four raid experience, with the final Khitai raid instance, and the last two new encounters in the Tier.
• v3.4 will again focus mainly on the technical side of Age of Conan: Unchained.
• v4.0 will be the next adventure pack that Funcom is not quite ready to reveal just yet. The target date for the deployment of v4.0 is sometime in Q2 2012.

You can read the finer details on the Age of Conan site.