It's generally not in the interests of either party for the matter to go to trial, especially when the defendants don't have deep pockets.
The Notice to Plaintiff states that participation in some kind of alternative dispute resolution process is required before the matter can proceed to trial.
Added this to the OP:
It should be known that the four plaintiffs had previously attempted to expedite the claims process and proposed a settlement agreement with Bitcoinica that would have granted a limited period of time to complete the claims, a much larger margin for error, and immunity:
https://docs.google.com/open?id=0B_ECG6JRZs-7SXFtdG1QXy1uSnMDiscussions began at the end of June, and while Tihan and Zhou were very cooperative and seemed to genuinely want what was in the best interest of the Bitcoinica users, Donald, Patrick and Amir were not taking the situation seriously. Soon, those three stopped responding to communications altogether and on July 9th, 2012, we presented them with the settlement offer. Tihan and Zhou (unfortunately, powerless) were again keen to take the offer, however, Donald Patrick and Amir declined.
Whether it's relevant or not, I don't know:
July 7th - Amir released the Bitcoinica source code
July 11th - Amir announces Mt.Gox account theft.