Port work is beginning for Apotheosis. This means a ton of things are going to be redone, looked at, touched up, or perhaps even removed. The current slate of preemptive changes thus far looks like this:
No real changes. The content in this module is focused solely on the growth cap changes to bamboo, sugarcane, and cacti. The way they work might change a little bit, but not in a way that would be noticable.
The psuedo-changes are because the world height is no longer capped.
Endless Quiver will be moving to the Enchantment Module. This has been a long time coming but the change was never made due to binary compat reasons.
Everything else (sundering, ancient knowledge, potion charms, recipes) will be staying as-is.