"Modernize, improve and clarify immigrant and nonimmigrant visa program this year?"
I think this will be implemented in March/April timeframe. I think I read somewhere in AILA article. Murthy attorneys may confirm. Regardless, We need to give it atleast 3 to 4 months from Nov 20th. It takes time to implement these things.
DHS, DOS, USCIS, etc are involved and would need to work together to implement president's directives.