On August 1st, Cerulean Studios released a public beta testing of Trillian 2.0 pro. This is currently only open to members paying for 1.0 pro.
.74 Client: Came directly from their site - "Those customers currently using Trillian .74D - our next release will be focused on updating our free client. This build is currently in testing and will be released after Pro 2.0."
This is a program you should at least look at the tour for. Just click on the link and view it.
Small list of new features: Multi Lang, can connect to a unlimited number of mediums(examples:AIM, Yahoo, etc), interface enhancements, and much much more.
Personal Note: I downloaded and read all on this version. It's a remarkable program. They did a major face lift on this. If you're a member, I would suggest downloading it. Just remember to back up your old files in a zip or something to recall if needed. I haven't ran into any errors yet.