This new version contains a number of improvements and bug fixes over the previous version.
For the last few months, we have been developing a whole new set of core elements that offer a huge improvement over the existing elements, making 3DFA as powerful, flexible, and easy to use as it can possibly be. A new version with the new elements will be released as version 5 later in the year.
We are also currently working on a sister product for 3DFA which uses the version 5 interface to generate SilverLight animations.
I apologize for the delay in releasing 4.9.8.5, it has taken a while to stabilize the code. If there are any significant bugs found then another new version will released next week.