I'm aware, but the details and specific goals are a little scant when you try looking deeper than a description like "better". Heck they are still walking on eggshells to maintain feats in their "optional" state and haven't exactly been open about if magic items will be expected in monster math either.You do know that Monsters and encounter building are being redone as well. Most monsters are in a much better situation as well.
Also the players can be easily challenged by the DM using even just MM monsters alone. I don't know if you know this, but it's really really easy to hit the PCs with more than they can handle.
Monsters are encounter design being redone without going into depth on the goals isn't all that different from the how much average gym membership helps with weight loss*
*You've gotta stick to it and not let up,