Cordana Felsong

Slight Spoilers with Legendary line.

I noticed when you take back Garona's mind with the Domination Orb (a shadow-y Orb) Cordana takes it saying she will dispose of it. However, no attack or any other destroying motion are shown, she just runs back to her spot.

Knowing the last time a Warden got her hands on a Shadow Orb owned by Gul'dan, things didn't go well. (Way back in WCIII).

Now this may just be a slight reference, it may be foreboding. Who knows. We may have a second Gul'dan assassin incoming.

as someone has guessed is before, with legendery info about 6.2 patch we learned that

Spoiler

You’ll have to fight Cordana to stop her from keeping the books and taking your precious, precious ring.

however, we dont know her reason for doing it. maybe she really has no intention of helping Gul'dan.

I find it utterly amusing that after all of that hullabaloo with trying to take your ring and/or attempt to kill you, she's STILL hanging out in your garrison.