Blizzard have announced some Guardian Druid buffs coming with the next reset!

Guardian (Source)

With scheduled weekly maintenance on February 7, we intend to deploy a number of tuning adjustments to specializations based on their performance in endgame content.

Due to the nature of our internal testing, some of these changes will also appear in the 10.0.7 PTR between now and February 7. This thread is for changes that will go into the live game on version 10.0.5 next week.

Druid

Guardian

Armor from Ironfur increased by 20%.

Reinforced Fur now increases Armor from Ironfur by 15% and Barkskin’s damage reduction by 10% (was 8% and 5%).

Ursoc’s Fury now grants an absorb shield based on 50% of damage dealt by Thrash and Maul (was 30%).

Reinvigoration’s Frenzied Regeneration cooldown reduction increased to 20/40% (was 15/30%).

Layered Mane chance to proc increased to 10/20% (was 5/10%).

Lunar Beam healing increased by 130% and cooldown reduced to 1 minute.

Developers’ notes: We are keeping a close eye on variances in survivability across tank specializations. These changes are intended to alleviate some difficulties Guardian Druids have been experiencing with certain damage types, as well as targeting some underperforming talents which were not delivering meaningful survivability improvements.

This is a work in progress, and we intend to add more tuning adjustments to the list above over the next few days.