latest bold release date?

Anyone know what the latest release date is on the Bold?

I have been eligible for an upgrade with AT&T for a month now, and have been wanting to replace my dying Pearl for that long. But, I wanted to wait for the Bold to come out... why buy the Curve right now if the Bold will be out so soon?

Additionally, anyone know where I can find a used Pearl or Curve for $50 or under for AT&T that I can use until the Bold comes out? The trackball on my Pearl is broken... doesn't let me "click" anymore (and, yes, I know I can hit "enter" instead, but that's just plain annoying!)