
I decided to worry about it later and finish up the trek that we were on. Later on tonight, I decided to go back out, and investigate some more. I ran back to where the sign was, and started thinking

What exactly did this sign point to? Where the heck is Graggult's Keep, and WHAT the heck is Graggult's Keep? The sign seemed to point towards the Eastern direction. I explored everywhere through that area, and none of the zone names had changed, nor had any new zone been added. Here is the SS of the whole area explored fully, so you guys know that I checked everything.

I also asked around in a few districts of random towns, and got no answer. So this lead me to conclude a few things as possibilities for an answer.
1. This Graggult's Keep is one of the two new EAs they will be adding in a few days here.
2. This Graggult's Keep is a new EA or outpost that they intend to add later.
3. This is an error.
4. They are going to be changing the name of Beacon's Perch to Graggult's Keep
5. Graggult's Keep is the rumoured "Cradle of Secrets" that has been briefly mentioned by the devs in past interviews.
I'm hoping for number 5, but I think it is just number 3. Please, if anyone finds anything out, or has any ideas, post them! I'd like to get to the bottom of this :-)