The author doesn't seem to say anything accurate. This isn't going to be 5.7. My understanding is that since there is something that is not this that is 6.x and that since this would be a major rev that this is more likely to be 7.x than 5.7

Then there is the magic "100% faster" but there isn't an explanation of what makes it faster, or what types of things will be faster. Is it faster for Computation? Faster for String manipulation? Is this mostly just memory access? Will Wordpress be faster? or things build on Zend? Or Drupal? Who will see this be faster?

I want to be excited. I don't really like PHP but I support a lot of it, and speed and stability would be great things to have improved, but I want a "why" that goes beyond, "The secret to this performance increase is that nearly 60% of cpu instructions have been “retired” by more efficient code"