Earlier today, Martin Kerstein clarified on Facebook what was already looking to be the case. That is, there will be no beta event this weekend (5/25 - 5/27). So if you were planning to use your Memorial Day Monday to justify a Guild Wars 2 binge, I don't know, go have a barbecue or something instead.
Oh? When is BWE2 happening, you ask?
"When it's ready."(TM)
We will be able to tell you exactly when BWE2 will take place as soon as all the hardware has been deployed. We are not withholding a date intentionally, we want to make sure that BWE2 will be a really great experience for all of you.