Community Manager James "Elrar" Nichols has posted a bulleted list of the patch 1.5 features that are now available for testing on Rift's Public Test Shard. Most of it was already mentioned at Gamescom, but it's nice to have an official list. Here's a summary:

• Planar Attunement (see above): This system is all about is all about progressing your character after level 50. Earn experience to get attunement points that are spent on Planar Attunement. Players can spend attunement points in one of the six planes to purchase a variety of bonuses ranging from combat to utility. See more screenshots in Nepabrite's thread.
• Chronicles of Telara Instances: Casual-friendly dungeons for 1-2 players that are intended for players just getting started after reaching Level 50. We already have a video preview up for Hammerknell Fortress.
• Master Mode Dungeons: They're designed for 5 players looking for a difficult instance that will challenge them more than expert dungeons. They will reward players with more powerful rewards then those found in T2 dungeon content, including marks of ascension which will allow them to purchase Tier 1 raid gear from the raid vendors.
• Warfront Accolades: They give players mini-achievements and goals that can be obtained during each warfront match. The majority of Accolades will reward the entire team.

If you're a fan of first-person shooters, the Warfront Accolades feature should look familiar. You can view a current list of the Accolades after the jump, but keep in mind they're subject to change.

List of Warfront Accolades (subject to change)

All Warfronts

• First Blood - First kill of the match, team awarded favor bonus.
• Killing Spree - Kill 9 enemy players without dying. Opposing team receives bonus for killing them.
• Annihilation - If you wipe the entire opposing team with at least one person alive on your team you will receive a bonus.
• Juggernaut - take massive damage over a significant period of time.
• Savior - Heal or shield a player that is being attacked and at low health.

Black Garden

• Invincible - Hold the fang longer than any mere mortal could!
• Death Wish - Given to the first player to grab the fang

Whitefall Steppes

• Reclaimer - Return a flag to your base 5 times in a single match
• Double Threat - Return your flag while carrying their sourcestone

Codex

• Defender - Interrupt or reclaim your control point before the enemy claims it for their own!
• Total Control - Control all 4 points at the same time

Port Scion

• Massacre - Slay as many of their sourcestone carriers as you can!
• Demolition - Destroy both of your enemies towers
• Double Down - Kill both Lieutenants before they resurrect an Idol

Escalation: Whitefall Steppes

• Blitz - First person to pick up a stomstone receives a bonus
• Sabotage - Take a stormstone out of the enemy base

Library of the Runemasters

• Mass Martyr - Entire team receives a bonus if you can hold on to 4 or more relics at the same time.