funny to see that some people know how fast or slow this new Macbook will be without even testing or actual reviews available.
I am gonna buy this new Macbook, will put on my workload on, like with my current MacBook Pro Retina late 2013.
Gonna do this for about 12-13 days...When not satisfied, bring it back to my local Apple Store and get the full refund, like I did in the past with my Mac´s
I am a moderate user and work almost wireless and dont need more ports then a power port
I think THE best review is your own review with your own workload
I've seen some predictions based on, for example, looking at the Lenovo Yoga 3 Pro CPU benchmarks. They seem to indicate pretty respectable performance, and would be an improvement if you're coming from a sufficiently old machine. I'd guess that if you came from a machine that doesn't have PCIe flash you'd see a considerable difference as well. It's possible to make some kind of ballpark prediction with what we know. I predict the new MacBook would handily beat my max-spec early 2009 17" MBP w/ SSD installed.
However, things like the keyboard I don't know if you can judge until you've had a chance to type on it (my benchmark for this is to play TypeRacer.com).