All of the Psion Talents will be available to all Psions. Ones outside their Discipline will simply cost 25XP more for standard one cost Talents, and +10 XP / Level for multi level ones.
Except for the ones that are general talents, right? In which case I’d still be curious as to which discipline this one might be intended for. Or do psions still need to pay the extra XP for general talents, making it a moot point?