Update your software, the update took 15 minutes here.
Opinion:
The black background is better in the initial lobby and also at the tables, it became easier to see the filters, and also the change from the side MENU to the top made things simpler.
At the top are the menus: "Poker" "Casino" "Sports" "Promotions" and "Support", the other side menus (My account, Rewards, Missions etc) can be seen by clicking on the small arrow next to the username.
Also in the top menu is shown the Cash Balance (in dollars now), Tournament Tickets and Tournament Dollars, as well as the Cashier button.
Overall I liked all the changes below some pictures: