Twin Peaks video shows the new BG which is simply Warsong v2.0.
One particular thing I noticed was kill times are definitely longer. The damage to health pool ratio is obviously changed, which should put far more priority on 1v1 strategy (especially CCs and interrupts) but also on overall game strats. We're going to have to be far more focused on grouping to optimal benefit (heal/melee/range-control teams at nodes, etc). We can't just zerg-wipe anymore.
Also interesting to see some of the post-level-80 spells being used. Very interesting indeed =)