The equipment slots and character stats are on the same page in the new Character Window. This will allow you to swap gear around and see how it affects your stats without having to jump around between tabs. However, we did change the window so that you only get 1 column of stats instead of two otherwise the window would have just been too wide. However, I think we made good use of that space.
We also did away with the "Details" tab and moved that data to either the Options tab or the Stats tab.
We hope that the mini-map will be useful enough that players will start wanting to have it up all the time. Now that it will display quest POI's and regions, you may want to make this a permanent part of your UI unless you don't do much raiding.
The POI and Region information will happen automatically. If the quest is in your Active Quest list, the data will appear on the map.
I forgot to mention that the Welcome screen and Marketplace have also seen an overhaul.
Here's a little sneak peak of the character window.
