Unity 8 looks a lot like Unity 7 which I use daily. While a lot is changing underneath there's definitely a feeling of continuation in the user experience.
The 3d desktop effects, however, don't seem to be the future. I loved the Compiz cube when if first came out and it impressed onlookers at the time but these things don't add to your enjoyment of using the system after a (fairly short) and they never make using it easier.