Translated from Polish:
– Special events will occur every two days, on weekends more often.– The level of happiness and houses is now displayed in easier to read way at the top of the game screen.– Decorations were rebalanced, now more expensive ones give you more.
– Remove bug with not adding gifts from friends and need to refresh the game.
– Improve the functioning of market.
– Removal of errors associated with bad value of happiness and houses.
– Remove many reasons of oops.
– Remove the bug with bad display of boxes’ image.
– Removal of many other errors that occur on some computers.
Source: http://nk.pl/#grupy/283768/forum/345#post3 (Polish).