Here is my theory! Before ANYONE releases it
Luffy's final bounty will be 5,600,000,000
It will be just over Roger with 100,000,000
Also, 56 is the number that Oda uses to represents Luffy
Luffy's number is 56
It will be the highest in the series.
Also, Roger was called "The worst Criminal" before Dragon, and not only that. He was called "Worst in HISTORY" so basically before his era and after his era. He is the WORST CRIMINAL EVER so far. Which makes me refuse the idea that some people say about Dragon having higher bounty than him.
Cause it will just be sucking up to the father of Main character, which is bad imo