The nondisclosure agreement that prevents players from discussing or showing what they have experienced in TORs beta has now been lifted, meaning leaks are now non-existant. (Source)
That doesn't mean information can be added with out correct sourcing, far from it. For example, if one tester says that Twi'lek's are playable by the Sith Warrior it can not be added unless their is proof to back it up.
We should be vigilant about fake information being added from this point on, as for us non-testers we can't know for sure if information is true of false.