The 17" represents something like 1% of the sales. That might not be enough to cover the R&D of new ones.
I had a 17" a long ways back, I really enjoyed it. However I had to get get rid of it because it was hurting my back lugging it around.
I wouldn't expect much in the way of updates for it.
i hope your back improved? there is a great acupuncture technique for that, or you can just straighten your posture from time to time and suck it up princess.
i have been 'lugging' my 2007 17 inch MACBOOK PRO since and still am in my handsome 'incase' backpack I got with it, it is not a 'burden' at all, it is my recording studio everywhere i go, it has been my workhorse and more.
the PROsumers out there have held on and been extremely productive with their 17" MACBOOK PROs thank you very much, we have been patiently waiting for much needed refreshes, but the

shafted us by not officially shedding any light on the reason for the "discontinue".
everyone is too easily keen on blaming this so called 'market', i spit on that very much, it is a better wiser thing to say that the PROsumers are busy still working away while the rest of the CONsumers buy every new idiotic toy that the

produces.
we the 17" PROsumers demand explanations and accountability around here.
thanks.
by the way I don't care for a retina display or anything for the 17", i care for the size and this is the limit size for portability in my books. i care for beefy innards and a little thinner form, sure, i can live without the cd-burner, i have a few laying around - what ever. retina is great on tiny toy screens like the ifad toy. i may get a 15" retina macbook for fun cos i can. but it wont be for work i can tell you that much, it is a worthless workhorse, how many people out there are using it for pro use anyways, i read more about 'overclocking' games and heat issues (cry babies) about the games running too hot etc etc etc going at lengths about the most ridiculous topics on this toy, they should remove the PRO cos to me it is just a retina macbook period.