The section of the patch 4.1 notes dedicated to holy paladins was particularly sparse this cycle. The only significant change was the buff to our Illuminated Healing mastery, as the Aura Mastery / Crusader Aura interaction was supposed to be changed some time ago. Some holy paladins may have been concerned with the note about Word of Glory receiving a 20-second cooldown, but luckily that's neutralized by an addition to Walk in the Light, one of our passive mastery bonuses.
The bulk of new content in patch 4.1 comes from the revamped troll instances of Zul'Gurub and Zul'Aman. New dungeons means new gear, and that includes several new epic items that are of interest to holy paladins. Guild challenges also introduce sizeable rewards for running dungeons in a guild group, and so you'll be dragged into healing these new 5-mans in no time. There's also the possibility that the new Call to Arms feature could yield bonus loot for healers volunteering to pug a heroic, but I haven't seen the little bag icon move from the tank icon since the patch's release.