With the arrival of the new expansion set, users might get interested in what changes are being made to their interface in order to enhance and/or enrich their gaming experience.

Here are the most important things, you should know about the new Cataclysm UI !

The Spellbook

has been fully redesigned, with extra features added;

There is an extra tab for professions;

Spells, you can learn immediately are now highlighted and advise you to visit your trainer;

Spells you have not learned yet are displayed including the level requirement at which you'll be able to learn them;

Professions Tab

looks really neat and polished;

PvP Panel

still in the works, but you can see signs of the new feature -- Rated Battlegrounds;

 Talent Frame

Displays all three talent trees at once -- they now support masteries;

Character Panel

The character panel displays all your stats on the right with the option to minimize tabs with stats you do not need at all in order to get to those more relevant ones;

Class & Profession Trainers

have a completely new interface;

Glyph Tab

looks pretty much the same, yet still a bit different;