Matt Low of WoW.com has posted a 25-man raid healing strat guide to the Ruby Sanctum boss Halion. It covers all phases of the fight and gives advice for all healing classes.
[WoW Patch 3.3.5] Raid healing guide to Halion
[Resto] Icecrown Citadel Valithria Dreamwalker strat for healers
The Restoration Druid blog has a write up on the unique strat involved in the Icecrown Citadel boss Valithria Dreamwalker. This boss must be healed rather than killed, so healing druids have to change their usual strategies. Check out the guide for an overview of the fight, tips for healing the boss and a video walkthrough.
[Resto] Druid healing tips for Icecrown Citadel: Lower Spires
The Tree Bark Jacket druid blog has an excellent list of Resto Druid tips for the Icecrown Citadel: Lower Spires bosses. Lord Marrowgar, Lady Deathwhisper, the Gunship Battle and everyone's new favorite loot pinata, Deathbringer Saurfang.
Configuring Grid for Icecrown Citadel: The Crimson Halls
The Falling Leaves And Wings had advice on configuring the Grid healing AddOn for the new Icecrown Citadel raid wing, the Crimson Halls. They speculate on the special buffs and debuffs you'll be encountering from The Blood Prince Council and Blood Queen Lana'thel.
Configuring Grid for healing Icecrown raid debuffs
The Falling Leaves and Wings druid blog has an excellent write up on using Grid to track the debuffs from the bosses of Plagueworks, the new ICC raid wing: Rotface, Festergut and Professor Putricide.
WoW Druid Restoration healing guide to IC10 Lower Citadel
Kae at the Dreambound Restoration Druid blog has posted a healing guide to all four bosses of the 10-man Normal raid version of Icecrown's Lower Citadel. She covers Marrowgar, Lady Deathwhisper, Gunship Battle and Deathbringer Saurfang.
Druid healing guide to Trial of the Crusader bosses Val’kyr Twins
Phase 4 of the Trial of the Crusader raid introduced in WoW Patch 3.2 has you facing off two bosses. Bellwether of the 4 Haelz Restoration Druid blog has a guide on healing the Val’kyr Twins.
Druid healing guide to the Trial of the Crusader Faction Champion bosses
Bellwether at 4 Haelz has some basic advice for all healers trying to keep their 10 or 25-man raid alive through the Faction Champions phase of the Trial of the Crusader introduced in WoW Patch 3.2.
Resto Tree Druid guide to Runecaster Molgeim Ulduar-10
The Dreambound blog runs through the 10-man Runecaster Molgeim fight phase by phase and highlights the parts the Resto Tree Druids need to pay attention to.