Three developments that I'm aware of coming from Netroots Nation 2010 today:
Reid promises filibuster reform. In the Q&A after his address today, Reid was quite clear that rule reform is needed. He compared the filibuster to the spitball in baseball, which initially wasn't illegal, but was used only sparingly, but once it began to be abused, baseball had to ban it. Interesting metaphor. He didn't give any details of what reform he has in mind though.
Tom Udall promises Senate rule reform. In the filibuster session that followed Reid's remarks, Udall promised to move that the Senate adopt its rules by majority vote on the first day of the 112th Congress next January. He is aiming to have this rule change adopted by simple majority, not two-thirds.
Common Cause planning lawsuit. At the filibuster reform session, someone from Common Cause stood up to announce they will file a federal lawsuit against the filibuster as unconstitutional. Nothing on their site yet, but hopefully soon.
As a reminder on the filibuster front, by my research, 36 State Senates do not allow the possibility of a filibuster. If a supermajority of States don't need the filibuster, why does the national Senate? Table inside.