For those who didn't purchase access earlier, or get their names drawn from CCP's hat after signing up on the web, there's one last way to guarantee access to the Dust 514 closed beta. But it, too, will cost you some cash.
From now through September 4, PlayStation Plus members can all jump in to the closed beta. Subscribers who would like to see just what this PS3/PC crossover business is all about can have a peek for the next two weeks. The current beta update includes the "first live DUST/EVE Online integration" as well as updates to environments, matchmaking and keyboard/mouse support, so it may be a good time to go look.
There are also a bunch of new screenshots of people shooting things and each other, and things blowing up excitingly. The screenshots are designed to "highlight the destruction vehicles can cause on the battlefield." They certainly do look dangerous.