Looks like this has mostly slipped under the radar but this is a pretty big change (especially for those of us who exclusively play M+). Moving into SL, it looks like Blizzard is going to decrease the drop rate of gear in M+ to a single piece in the box at the end of the dungeon. Obviously this could change at a later date but this will effectively neuter one of the easiest ways to gear your toon in the expansion.
Here's the interview, and the specific information from Ion quoted below:
I'm usually a supporter of Blizzard but after seeing the way that Soulbinds are going to work on top of this change to M+ I'm deeply regretting my decision to preorder this expansion.Originally Posted by Blizzard Entertainment