I searched nothing found, this is new to 2.4 (Nerfed)
First you need the addon Examier a inspect mod, more options and other things.. Anyway you can bind it to a key i use 'I' so well let's say if your in a BG and you wants to inspect your opponent's spec
You basically go to him inspect him he will stand and make a animation every 0.1 (same animation) prevent you from see hes gear / talent and such.. But if you kill him and he release there will always be a little delay where you can see hes spirit over he's corpse where he is (non-pvp tagged) if you click that spirit and inspect you can see hes gear and talents aslong as you dont target another player, it works like if you inspect someone in shattrath. Try it
Tell me if im wrong