From the user perspective when running against the Qt main snapshot you will see the following
- Close buttons are now placed on each tabs
- The buttons to the left and right of the tabs (new and close) are gone
- The 2px useless frame on the left/bottom/right side of the webpage is now gone. When maximized and your mouse is on the far right it actually scrolls as you would expect.
- Rather then clicking and dragging (a dnd box) and dropping it where you want a tab to go and then having all the tabs suddenly re-arrange you can now actually drag a tab to where you want it to go and it actually moves with your mouse and the other tabs automatically slide out of your way.
- In OS X the tabs use the same styling as Safari, Terminal and other tab based applications.
For the more technical details and a video of the animation check out my labs.trolltech.com Some QTabBar & QTabWidget Love blog entry.
Beyond just that tab bar I have put in some time to make Arora feel more at home in OS X. The combination of that work finally makes Arora look not half bad in OS X.