I realize most of the people around these parts (excluding myself, that is) don’t believe 3D is going to catch on, but it would seem that, every single day, I’m reading a study about the rapid growth of 3D adoption rates in homes, as well as TV manufacturers projecting huge leaps in 3D TV sales over the next few years.
Personally (i.e. I have no data to back this up), I think 3D is taking a foothold significantly faster than Blu-ray.