Controversial changes to the Realms (from, like, 2008) have been rolled back in favor of a more "evergreen" approach.
They're talking about the rollback of much bigger controversial changes, such as rearranging/removing large portions of the continent and the world, removing well-known (even beloved) cities/nations/regions, and adding much-derided new cities/nations/regions (although I imagine Tymanther at least will stay in some form). Compared to these, the changes in the PDK are like a mere candle vs the sun.Have they? If so, whats up with the PDK?
They're talking about much bigger controversial changes, such as rearranging/removing large portions of the continent and the world, removing well-known (even beloved) cities/nations/regions, and adding much-derided new cities/nations/regions (although I imagine Tymanther at least will stay in some form). Compared to these, the changes in the PDK are like a mere candle vs the sun.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.