I've read through then a few times now and I am hopeful that these truly represent the rules Games Workshop is working on.
I am very pleased with the changes in general. I believe that the changes to assault will add tactical depth to the game. The ability to get the jump on an opponent who is locked in combat will make for some very nifty ambushes.
The reduction of due rolls will also tend to speed things up tremendously.
Here's hoping these rules are the real McCoy...