A Kickstarter update for Wasteland 2 has word from inXile entertainment that a new beta is expected to go live next week, which, among other things, will offer the first Linux build of the crowd-funded RPG sequel. They also say they currently expect a "normal playthrough" of the game to take about 50 hours to complete, and describe what they are currently working on:

One thing we were excited to look into were stats showing how long people were playing the game. It can be hard for a developer to estimate exactly how long a game takes because even when playing through fully, we're still too familiar with it to not go through it fast. But now that we've had people playing it and based on how long they've been taking on the live content, we can estimate the full game will likely take the average new player around 50 hours on a normal playthrough. Though it'll take quite a bit longer if you're looking to fully explore every location and mission.

Now let's talk development: at this stage we are working not just on beta builds and polishing those areas, but on tweaking the game's systems and taking lessons learned from beta feedback and applying them throughout the game. Every day our level designers are adding new touches and various levels of reactivity to the game. For example, in this next update you'll find major areas are now open to you right from the moment you leave Ranger Citadel, rather than being plot-gated.

As we're finishing up more Arizona areas we are intensifying our work on Los Angeles, and for the entire game we are making great progress. Much of the team is on California right now, adding layer after layer of depth into the current design.