It looks like that things are going to get even better. After the Zen demo presentation we had a chance to get a quote from Patrick Moorhead president & principal analyst of Moor insights & strategy.

What AMD showed about Zen last night was very compelling on performance. AMD said that power would be competitive, The frequencies we saw will be even higher at production, and will scale.
All of this sounds incredibly positive. There's a lot of stuff to do between now and launch, but at a minimum, I believe AMD will be in a much better position than they have been in years in processors. To put this in perspective, this is the biggest thing I've seen in 10 years in CPUs at AMD