Yeah, it's true. I was able to trade, party, and chat (using normal chat as well as /c) with Humans.
Akkans also show up as enemies. I can see nobodies name, only their class.
Here's a screenshot of me being in a party with Humans.
https://2img.net/r/ihimizer/img155/1787/4thbizarretemplar200811ti1.jpg
![I'm a Templar that is allied with Humans. 4thbizarretemplar200811ti1](https://2img.net/r/ihimizer/img155/1787/4thbizarretemplar200811ti1.jpg)