Yeah, I saw that later....
Anyways, IF apple were to release it during the summer, that is the most probable time. However It's the middle of summer so many people have already bought there computers. Also, it seems logical to wait until Mavericks and release the laptops with the release.
If you haven't already heard, there was a geekbench benchmark that surfaced of what appears to be a haswell rMBP. It shows a modest gain in cpu performance but it has IRIS PRO. This pretty much puts the nail in the coffin for a dGPU in the next gen rMBP. There is a chance that apple might make a version with a dGPU, but it would probably be a top of the line model and be rather costly.
Here is a comparison of the Haswell rMBP benchmark and the base current rMBP benchmark
http://browser.primatelabs.com/geekbench2/compare/2139563/2154073
As you can tell there is about a 1100 point difference between the two
Other versions:
2.4 Haswell (6mb cache): 12497___Difference
2.8 Ivy: 12401 ___ 96
2.7 (6mb cache): 12045 ___452
2.7 (8mb cache): 12014___483
2.6: 11668___ 829
2.4: 11168 ___1329
2.3: 10775 ___1772
We can use the 1329 difference to predict the new high end model prices (there are probably benchmarks of the higher end processors but whatever)
(hypothetical) 2.8 Haswell: 13730
(hypothetical) 2.7 Haswell: 13374
Note the fact that the leaked haswell rmbp benchmark is running Mavericks, so that might affect the scores.
Does anyone know how much of an impact 1300 points is on things like general use, gaming, photo editing, etc? Because it is a good jump but doesn't seem that significant, but maybe it is, correct me if I'm wrong...
It also has 16gb of ram by default.
So either wait and get around 1000 points in more cpu power, but less gpu power (or, if there is dGPU high end option, pay lots more money), faster ssd, more battery life and 802.11ac.
Or get a refurb/discounted one now with a better gpu, a marginally slower cpu, and
maybe more storage space. 512 might be the baseline now. (note that the baseline for the 11 inch air went from 64gb to 128)