I remember on Don’s Axis & Allies forum (what happened there?) Mike (the guy that wrote the rule book?) altered the set-up for Japan, and changed the rule to outlaw substalling.
AA Europe had an adendum added to its later runs of games, and changes to it were added on the website.
Pacific, by contrast, never had an adendum added, not were the changes ever acknowledged by Avalonhill. In fact, when Wizards took over, they released on their website a faq stating that the game out of the box was how the game was to be, ignoring the changes proposed by the creators.
Will Larry’s changes be the same deal, or does he actually have a say in how the game develops even after he hands it over to Avalonhill?