Gnomedolf
<Silver Donator>
I was hoping for new rMBP's, too. As you say, however, Maverick's should fix the UI lag on the retina machines. Because of this, I may just go with a refurb model, as I can get a much higher spec machine for less money. Battery life isn't that important to me, as my laptop is almost always plugged in.Sadly, no Retina MBPs at Apple's WWDC event (unless they show them off at the last second, anyway). They did announce new Macbook Airs, though, and they claim that the combination of Haswell and optimisations in the new OSX release boosts battery life by as much as 80%, which is pretty damn impressive if true. They also dropped the price of the new Macbook Airs, which is rather surprising.
It also looks like the new OSX version, 'Mavericks', will fix the Retina lag. On their 'advanced technologies' slide, they showed 'GPU resolution scaling', or something like that, which should fix that problem once and for all. They demoed all their stuff on a Retina MBP, too, and it all looked really smooth.
I guess we'll see updated Haswell Retina MBPs when OSX Mavericks launches in a few months time.