If you were hoping for an Update that would return PLDs to their previous glory, you are going to be disappointed to say the least.
While WAR gains a JA *Blood Rage* that potentially boosts the Dps of itself and the entire party, and MNKs DOT will now scale upwards dramatically *Impetus* with every consecutive succesfull hit and BLMs will now be able to Nuke even harder without as much concern for hate issues *Enmity douse*, PLDs will gets Holy Circle+1 *Sepulcher*
There is the slight chance that higher Tier NMs in the new Abyssea zones will require a solid tank and be impossible to zerg down once you've gotten your grellow or red !!'s. However, seeing as how the JA's in this update seem to be oblivious to the current situation with PLD, I wouldn't hold my breath.