Well first of all we'll be just having one version - black/dark - I'll then put in some of the color version asap.
There will be whos online, a link back to the top of the thread at the bottom, number of views for each thread, post and submission count under your avatar, and a quick favourite forums drop down list at the top of each forum page.
We'll work on some other stuff in 09. The main difference I think you will notice is to the header above the forum, where all the links are... Start new topic etc... We've made that whole area look better.