The war in Krasarang Wilds begins spilling over into other zones. Primarily in Kun'Lai. The road between Krasarang Wilds and the Endless Stair (leading to Kun'Lai) will also see signs of the Horde/Alliance conflict (broken down siege machines, NPC skirmishes, gnome gyrocopters/goblin gliders flying overhead).
Storywise, us heroes (who've "gone a little native") will be primarily concerned with dealing with the Thunder King, not realizing the wrecking of beautiful Pandaria until it's too late, in 5.3.