Official Translation:

Tank
•Paladin
Their damage output was a bit too high, so we have lowered their DPS just a bit.


•Warrior/Dark Knight
The DPS for both warrior and dark knight will be increased. For warriors, we will lower the effect of Storm’s Eye a little; however, will be increasing the potency of other actions. We've also made system changes to Inner Release and Berserk.

For dark knight, we have increased their usability in general.
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Additional notes from the Reddit thread: Link

TANKS

•DRK: DPS will be buffed slightly; usability will be improved.


•PLD: DPS will be nerfed slightly.


•WAR: Beast gauge management will be simplified, Storm's Eye effect magnitude will be scaled back in exchange for having other actions buffed (same deal as DRG's previous adjustments with Heavy Thrust), and changes will be made to Inner Release and Berserk. DPS will be buffed slightly.
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Vague as F. What the hell are "System Changes to IR and Zerk". Wtf is simplified beast gauge management? Getting rid of the leftover 5s? Drk 'Usability will be improved'? Why bother saying anything at all in these things. So useless.