A representative for NCSoft has informed Destructoid that these beta events will not be mere "weekends," instead opting for tests for "several weeks." If you're wondering how the game plays, it's basically very similar to World of Warcraft, but with a sci-fi/steampunk veneer, and other contemporary design changes.
The sign-up process is extremely painless and basically just requires you to fill in and tick a few boxes. No lengthy questionnaires, thank goodness! Let's find out how the game is later this year together.
Beta Sign-up [WildStar]