Hand of Light now increases damage of Templar's Verdict, Crusader Strike, and Divine Storm by 16.8%, down from 20%. Each point of Mastery increases the damage by an additional 2.1%, down from 2.5%.

Hammer of Wrath damage "nerfed" by 50% on PTRs
This is actually a bug. A very non-excessive, non-stealthy bug. There was small coding change in the latest PTR build that caused Hammer of Wrath, a ranged ability, to use ranged attack power instead of melee attack power. The change itself was completely unintended and has since been corrected.

Сlass Balancing
That's not really how it works. Balance is an ongoing, iterative process, and we continually examine how class abilities interact and scale with one another. Even when we're not actively developing a patch, we don't just sit around with our hands over our eyes and wait for something to happen. We consider alternatives and monitor areas of balance we feel may need further finessing if things don't stay at the status quo.

So, simply because we have an idea for how we might be able to tone down paladin damage in the future -- if it becomes necessary -- that doesn't mean change is imminent. It also doesn't mean that we've made some fancy list with little empty checkboxes on one side and paladin abilities on the other and are now sitting perched with a big red pen in our hand, just waiting to draw an X through the one labeled "Hammer of Wrath." No, all it means is that we feel Hammer of Wrath may be a reasonable candidate for adjustment should we need to reexamine paladin DPS sometime down the line. Your fellow posters have offered counters as to why that may not be best approach, of course, and we absolutely appreciate the feedback.