The epic chain, called the Water Saga, not only reveals the truth about the origins of the Abyssal cult, but gives players an opportunity to score high-end loot and a special crocnard mount. Those looking for more group-oriented activities may want to check out the Drowned Halls, a 10-person sliver that presents an alternate view of history where the Abyssal have conquered Telara.
Patch 1.4 has plenty of PvP action as well, including PvP rifts and alternative forms of warfronts. There are plenty of other goodies in store from the RIFT team, including quest item storage, the LFG tool expanding cross-server, and several new crafting options. Currently, there is no date for the patch.