A Kickstarter update for Wasteland 2 has details on the changes in a major update to the beta version of inXile entertainment's RPG remake. This includes major updates for the character and inventory screens, the addition of a fifth major location, and a "significant" overhaul of combat. They are also offering new options to allow Wasteland 2 and some Torment backers to buy into the beta:

We have launched our limited-time add-on option for existing Wasteland 2 backers. This $10 add-on will be available for purchase for a limited time, and will give access to Wasteland 2's beta. It does not include the other extras from the Steam digital deluxe edition. To purchase this add-on, log into your Ranger Center account, you will find it under the backer store tab.

Torment backers: If your tier included Wasteland 2 and you didn't already get the beta as an add-on, you are eligible for this $10 add-on as well. Log in to your Torment pledge management account and the add-on will appear in the Torment store listing. This applies only to tiers that include Wasteland 2. Please contact us via the system if you run into any problems.