You are correct that it is in the alpha phase, but I'm fairly certain that the alpha is open to those that sign-up for the beta. The people are naturally quite few that they selected, but as they said in an interview. The alpha is PC only. When it reaches beta it will be PC and PS3. So don't expect any sort of beta notification for at least another month or two. Also do note that they have already expressly said in the interviews that the alpha and beta versions of the game will not hold 100% of the final content. They are only using it to test out systems and the overall designs of the game. So if you get into the beta and then see that the content is quite limited, don't think what you're see is the full extent of the content. The beta won't be an early look of what the final release of the game is with everything available to you. You'll be there to test the systems with I think they said only about 50% of the available content compared to the final product.