The changes that will go live are the 20% damage reduction to Seal of Command and its Judgement, as well as the reduction of Judgements of the Wise mana return from 33% of base mana to 15%. To further illustrate that the nerfs are intended for PvP, Ghostcrawler also happily announces that Seal of Blood / the Martyr will be un-nerfed to about "95% of where the (sic) used to be" in Patch 3.0.3. He says that, "hopefully this will compensate PvE Retadins for relying less on more expensive AE abilities that risk putting them out of mana."
The statements are curious on several points. In his lengthy response to the community, Ghostcrawler shot down accusations that the spec was being nerfed because of PvP by saying, "Ret PvE dps was also too high." If that's true, it's interesting that Blizzard is un-nerfing Seal of Blood / the Martyr. Both are PvE Retribution DPS Seals, and higher damage coefficients from the spells will result directly in higher DPS. This is good news, no question about it. It's just confusing.