Dhruin
SasqWatch
A new blog entry on the Diablo III site explains the Shared Stash and related changes, such as Gold is automatically shared among characters:
More information.
Skill Calculators are also now available for each of the five classes if you'd like to play with builds.While players will start out with only a single tab in their shared stash with a limited number of slots, upgrades in the form of additional slots and tabs can be purchased for gold by any character you create. You'll be able to buy up to 5 tabs, each containing 70 slots of space, for a total of 350 slots of shared storage! Once bought, the upgraded storage space will be available to every character on your Diablo III account.
More information.