The new versions have a green (poker table) motif. Shanghai got an option to change the hands played. Hearts got the Jack of Diamonds option. Rook got an option for how many points the baby bird (or red 1) is worth. And Spades got the most options. Few new features, but some, like Double Over Double Back. Mostly just options to turn on or off features that already existed. Look at the support URL’s for the apps for explanations of the options.
More to come (mostly in Spades as it’s my favorite game) but send an email to the support email of the app if there any requests you’d like to make.