The latest Rift update, 1.5 - "Ashes of History" is now live. The new update includes the Planar Attunement system, duo dungeons, and a brand new PvP Warfront. 

Trion Worlds has even released a new trailer giving a first look at what gamers can expect when they log in.

Features in the update include(Rift Gold):
Planar Attunement - Advance beyond level 50 with Planar Attunement. Every quest completed and planespawn slain brings you closer to your next planar upgrade.
Chronicles - Teams of two players (or one, if you’ve got the gear) can take on Rift Chronicles, exploring breathtaking dungeons — including Greenscale’s Blight, Hammerknell, and the Chronicles of Attunement—in fun, story-driven
New Warfront: Library of the Runemasters - PvP combat erupts in Hammerknell’s Library of the Runemasters. Race the enemy faction to control Dwarven secrets, and rise through the ranks in this pulse-pounding new Warfront.
Master Dungeon – Darkening Deeps now sports a Master Dungeon mode. Rebalanced for elite groups of Ascended, the Master Dungeon holds epic challenges and epic rewards.
Veteran Rewards - Subscribers earn rewards the longer they play Rift, including special gear, a personal vendor, and a portable mailbox.
AddOns Beta – Customize your play with new AddOns Beta, fan-created mods for your Rift user interface.