The new level 60 talent Ring of Peace visual and how it interacts with moving/chars (I'll just steal Himallt's comment on Wowhead):
+ Cannot be dispelled (although Ice Block and Divine Shield may remove it).
+ The duration is not reduced in pvp.
+ The ring stays on the target as opposed to being a fixed ring on the floor; this means that it can be used offensively to prevent healers from casting for 8 seconds or defensively if your team is getting trained.
+ The warrior set bonus (-50% disarm duration) doesn't affect this.
+ Currently the longest pvp silence at 8 seconds.
+ The short cooldown and 40yd range gives this talent a lot of flexibility and unlike the other two talents on this tier, this ability doesn't require positioning of your character for it to be effective.