So, Jeremy Crawford has posted the survey for the last Unearthed Arcana of 2019:
Our next Unearthed Arcana is coming soon! In the meantime please follow the survey link below to let us know what you think about the fighter, rogue, and wizard.
Well, there’s no reason to think they will be, at least in total.
To me, rather than a new eldritch Knight, just add an “enhancement” that lets the player choose a full caster class to take spells from, using their Spellcasting ability mod.IMHO, the Soulknife was on the right track. It had some problems, such as the fact that the key feature becomes somewhat nullified by a +3 Short Sword. I also would have preferred abilities that enhanced their roguish mobility more rather than the somewhat lukewarm level 3 ability.
Psionic Tradition? Assuming that it's not meant to be a Psion replacement, it just did not seem as competitive with other wizard traditions and kinda boring, almost a one-trick pony built around its level 6 ability.
Psychic Warrior? I would have preferred if it was built more akin to the Eldritch Knight or just made a warrior subclass of the Psion (e.g., Bladesinger, Hexblade, Valor Bard, etc.).