I always got the impression that WotC realized the psionics name was almost permanently scarred by the horrible 2e rules for them, and decided to use psionics as kind of a dumping ground for new ideas. Things like immediate actions (which first started popping up in 3.0 psionics), the concept of per encounter abilities (i.e. spending a full round action to re-gain focus), and talent trees (variations of psions having different skill lists, different powers, and using different ability scores) all originated in psionics. I would imagine that you could find many spells that are tangentially based on ideas originally found as powers.
Assuming this is in some way remotely true, I would expect to see psionics be a bastardized/canibalized/mutiated version of whatever WotC comes up with for the standard magic system, same as they are in 3.x.
Assuming this is in some way remotely true, I would expect to see psionics be a bastardized/canibalized/mutiated version of whatever WotC comes up with for the standard magic system, same as they are in 3.x.