I might be busy for a few days, but here is a super quick-and-dirty implementation of the T12 bonuses in the current PTR client (
Item - Druid T12 Restoration 2P Bonus - Spell - World of Warcraft and
Item - Druid T12 Restoration 4P Bonus - Spell - World of Warcraft). Just manually activate the bonus on the main page, it's not hooked up to the gear page yet.
The 2-piece is regen-only, not the most exciting thing in the world, but gives a pretty reasonable amount of mana.
The 4-piece is tricky to evaluate. It really only does anything in Tree form, but has the potential to make a bunch of rapid Lifebloom blooms around the raid be pretty strong AoE burst. It's interesting at any rate, and should at the very least be nicer to have around than then pretty worthless T11 2-piece it replaces.
Tecton, this is based on your 4/27 version with the added ZA gear (I still have to put that in the OP at some point).
e: reuploaded to fix a math error.