Well I can't answer your tech question, but I do have a 2010 13" MBP. I could maybe even get the store do to an upgrade if I were really polite and nice.
But, I think I'll be keeping mine. At least for now. Here's why:
1) I'm really not super fond of the glossy screen, and I also don't like high-res displays on small screens, because I do a lot of writing/reading and it makes the characters really small (for me = squinting).
So I think if I went for a new computer, I wouldn't get another 13" MBP since they are all glossy screened. But what TO get??
A) The refurbished 15" MBP's look like a sweet deal right now, but as far as I can tell there is no matte/regular res option (only on the new ones do I see that). If I move to a 15" computer, I'm spending more and so am fussier: I don't want high res matte, nor do I want regular res glossy.
B) The combo I would want - regular res/matte - is now available in 15" with the refresh, but then we're talking nearly twice $$ as much as the MBP 13" I have. I would probably pay that if I new for sure that's what I wanted, but....
...then another side of me says "if staying 'small,' go with the 13" Air." Yes, it's high res, but at least it is matte. AND thin and "fun." But no backlit keyboard.... and then maybe go REALLY small and light and get the 11" and an external monitor..... 😱
So, I come around to the fact that my current, pretty much brand new MBP 13" is pretty darned good, and if I don't go spending $500-$1000 (difference) on another computer right now -- when I'm not even sure what I really want -- I can save it for the NEXT computer, when maybe I will have a better idea of my usage and desires (like, am I really going to get Aperture and start using it? Am I going to get into iMovie? FCE?? -- Would a super portable Air be better? I can probably find out by just keeping my MBP for now).
I think I will upgrade to 8g RAM, because it sounds like that is a lot of bang for the buck, and it will just come to me in the mail and I can do it myself (driving to the Apple store is a bit of a pain from my location).
Now if people come on and say that the new 13" is SO much better for Aperture, etc..... maybe I'll change my mind.
Oh, one other thing: It took my going through two+ MBP's to get one with a nice, smooth aluminum feel (not rough or extra-sharp edges). I don't know if I want to give my nice, smooth, "perfect" MBP up and go through all that again right now. Not to mention I'm not all that fond of the aluminum unibody anyway, so I'll be super keen to change if/when a new case comes out.
AND, I'm not really the early adopter type. Will the new ones run uneccesarily hot? Will there be "teething" problems? Maybe not, but perhaps I'll let others find out (knowing myself).
Miss Terri