Simple questions regarding new patch

I’ve been away from the game for several days and had a few simplified questions about what’s getting dropped in the new upcoming patch.

I find it a little difficult trying to interpret some of blizzard’s language in some of the patch notes.

1) stature drop rates - increasing or decreasing?

2) shard drop rates - increasing or decreasing?

3) sunder drop rates - increasing or decreasing?

4) do sunders now only drop from heralds like before?

5) miasma chains - fixing the bug associated with them getting blocked by friendliest? Would Bone Prison be considered a friendly and allow casting through them? Are they also addressing the zero damage issue?

Shard/statue drop rates are both decreasing

Sunder drop rates *are* decreasing from mf, but are staying the same from heralds. It sounds like there'll be more of a point to farm heralds (+ increased odds for tier 3 to drop rares or better) but it depends how strong all these changes are

Miasma.... I think that remains to be seen but i suspect they would've mentioned it if they fixed the no damage bug :/ So not rly holding my breath

(Also wb ^^)