ALL GAMES now use an improved shuffling algorithm, which might be especially noticeable with smaller sets.
IONIA now has:
Intro and character-specific endgame screens
Increasing difficulty as you progress - Violet will be a lot harder to beat than before.
BILLIONAIRE is now less typing-speed sensitive - answering stock-market questions gives you a price boost that now includes all of the price you lost *while answering the question*.
MUSICA was almost completely rewritten, with massive pacing changes and a new magazine-interview section.
CONSPIRACY had some bugfixes. Which is slightly disappointing compared to the others, but there are definite cool things in the pipeline there...