To my knowledge, the difference between the prototype version of the game that you play, and the version that we got, is different in the following ways
* Different art, font, icons, aspect ratio, stuff that doesn't matter functionally
* The new expansion(s) you're working on
* Tweaks to a bunch of Hinterlands cards ($2 Mandarin, moving the +Buy from Margrave to Cache, etc.)
Are there any other tweaks? Do your throne rooms secretly say "non-duration"?