My gut instinct still tells me that there will be a redesign, but nothing too dramatic (maybe very slightly thinner and "wedged" shaped design at most). If there weren't a redesign, why would Apple want to stagger the releases having the 15" launched soon (April/May) and the 13" later in June/July (again, these predictions were also based off rumors).
The only previous issue of the 13" sporting a quad-core was heat dissipation. But if there weren't a redesign, and only a spec bump with the processor, why wouldn't Apple release the 13" and the same time as the 15"? I mean with the lower wattage IB and more efficient integrated graphics, it shouldn't be a problem to stick a IB quad into the current 13" form factor.
From what I've read and researched so far... this is probably my best guess if there is a redesign:
Ivy Bridge (For sure; 2.7 and 2.9Ghz options)
Dedicated graphics (Can't rely just on HD4000, Nvidia or Radeon I wouldn't care too much)
Standard HDD with options for SSD (As much as I dislike HDDs, I just don't think Apple can drive down the prices of decent SATA3 6GB/s SSDs in the near future. Nor would I expect Apple to stick in some blade SSD as some have mentioned. I'd much much rather have just a standard HDD at a lower base price; then blow $300-350 on an 240GB OCZ Vertex 3 or 4. *SSDs that Apple offers for BTO options typically run 200mb/s max read and write, much rather spend a bit more third party and get closer to 500mb/s read write.
RAM... please don't solder it down like the MBA. Pro is all about customizing to your desires
As for display... nothing short of 1900x1200. Maybe a *crosses finger* standard Retina 2880x1800.
No ODD. Think logically about the layout of the inside guts of the MBA. If the new redesigned MBP eliminated the ODD, it would allow Apple to rearrange the layout of the insides. Assuming the redesign is slimmer with possibly a wedge shape, we could try and hypothesize the layout of the insides. With the MBP flipped "top" down, I'd expect the hard drive bay to be "top right" (2.5 SSD/HDD placed at the thickest point near where the back vents are on the current MBP). From here Apple could have two options;
1) allow for 2nd SSD/HDD just next to it (So far fetched but still... I'm dreaming here hehe), with the logic board towards one side position where your palms would rest (accounting for the fact that hopefully it IB would be more heat-friendly, then newer slimmer batteries on the other side.
2) Logic board placed adjacent to first SSD/HDD slot at the thickest point, allowing for a similar battery layout like the MBA - this would be more probable (keeping in mind space for dedicated graphics) AND as a result *hopefully* the MBP would have a ridiculous battery life
With either option, this would also allow the MBP to finally have ports on both sides.
As for the "full surface trackpad" rumours, I wouldn't really be surprised if the new redesigned MBP has it- given the patents and rumors. Not only would this really set the MBP line apart from other laptops in its class, it could also work very well if they decide to do a major revamp of gestures in Mountain Lion. Also, as for "mis-clicks", the rumors and patents of the full-surface trackpad said that Apple would work on creating an algorithm that distinguishes touch from your fingertips, and touch from your palm (so if your palm rested on it, it would recognize it and not affect your tracking).
Surround sound... doesn't really matter to me. Working with audio so mainly use AKG K702s anyways. One thing that I WOULD wish for is that Apple entire dumps their internal amps and onboard equalizer and actually launch a decent one

Being an audiophile, I find that the internal amps are absolutely terrible. As a portable laptop, I wouldn't normally bring my amp with me everywhere so if I want to put on some IEMs and listen to some tunes, I don't want my ears to bleed from playing music on iTunes

This is just a peeve and general issue I find across all Apple products- that's why I carry a separate Cowon J3 just for music and don't sync music onto my iPhone. So for Apple "audio" developers out there (if there's such thing lol) please correct this

hehe
Apologize for any poor grammar or spelling errors... pretty late at night for me haha
