Inxile has released a beta version of Wasteland 2 to those who backed the RPG when it was funded on Kickstarter, and a Steam Early Access version of the game is set to be released once the game's backers have had a first look.
Not all of the features are in place yet, and a detailed explanation of what backers can expect to see from this beta can be found in an update written by Brian Fargo which has been posted on Wasteland 2's Kickstarter page (and sent to backers).