Bashoik at the official Battle.net/d3 site has updated the curent beta-key give away status. I've created a video with details which you can watch below.
In summary of the video, you'll learn about a dozen or so websites and organization still doing beta-key give aways for Diablo III so you can get in and play the first part of Act I in the Diablo III beta.
So if your interested in getting into the Diablo III beta, the good news is that there's still time!
Information on how to Diablo III Beta Keys Through March 25th — 2012 watch here.