I am definately looking forward to the Autodesk Official Training Courseware (AOTC) for Civil 3D 2006. I believe it will be an update version, which means it focuses on the differences between 2006 and 2005.
I was impressed with the Civil 3D 2005 AOTC. There were a few things left out but as far as showing how things are done with real world examples that I could relate to, I liked it.
I had previously read on Shaan Hurley's Blog that the new versions of AOTC will contain product trial CDs of the software, they will be standard 8-1/2 x 11 inches in size, and they will be spiral bound (they can lie flat). All welcome changes.