BlizzCon 2013: Inventory improvements in Warlords of Draenor
In the World of Warcraft: What's Next panel, Greg "Ghostcrawler" Street announced several new inventory updates on the way for Warlords of Draenor. Your bags are about to get a lot less cluttered.
New account-wide collections similar to mounts and pets: heirlooms, toys, and possibly tabards.
The toy box puts all of your fun vanity items in a spellbook type interface. They will no longer take up bag slots!
You can set favorites in your toy box (as well as your mounts) to help sort them, and there will be a new button to "summon a random favorite" mount.
Bags will be sortable without any external addons.
Other new bag features include the highlighting of recently looted items, a gold piece icon on items which are safe to vendor, and colored borders around icons based on rarity (blue, purple, etc.)
Quest items will no longer take up bag space. They will just be activated from the quest tracker.
Crafting can be done using materials in your bank and the stack size of many materials is being increased to 100.