The hope/goal is they would make it easier to file AES. There are ongoing conversations already regarding what requires AES filing and what does not, and further clarity will come in the weeks ahead.
Regarding the need to file AES when leaving the USA after bringing a firearm in temporarily with an ATF 6NIA -- it is my understanding that they erroneously left some language in the analysis portion of the rules suggesting this, but did not implement this within the actual regulatory changes.