From that link:
Will my L50 character be able to visit Praetoria?
War Witch:
Yes, but not right off the bat. Right now, we want to give Praetorians as pure an experience as possible and it's hard to give them that if some Paragonian or Rogue Islander shows up, breaking their immersion. So for a little while, we'll keep it Praetorian-only, then as things settle down, we'll open up the link to Primals.
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So, I was pleasantly surprised to know that anyone who pre-purchased GR will get access to those zones tonight prior to the release tomorrow. When I logged into CoH, everything seemed to be the same after my download with the exceptions of the hero symbol and those exclamation points that I had to figure out how to turn off...lol.
Anyways, I was assuming you could access the new zones for GR from CoH side. This doesn't seem to be the case. So, I logged back out and noticed I had no more slots left for my Freedom side, (12 used so far). So, I opened up a new toon on Virtue Server and presto, I could now access GR zones. I did it fast and then deleted it again figuring I can always take my time later to build another toon.
So, without getting too deep into this as I have not been reading up on how to access zones and such, is the only way you can access GR zones is by creating a Praetorian? For those who have handed out many an explanation on this, please feel free to send me a quick link so I can read more on this. Thanks guys.