Im getting ready to buy a fully upgraded 27" iMac in 2-3 weeks.
I just wanted know if Apple would update it anytime soon. Also do you think they will release a completely new one with a different design anytime soon or is the current design here to stay?
The iMac will probably not be updated until September/October. And I doubt we'd see a redesign this year, the current design is only a year and a half old.Im getting ready to buy a fully upgraded 27" iMac in 2-3 weeks.
I just wanted know if Apple would update it anytime soon. Also do you think they will release a completely new one with a different design anytime soon or is the current design here to stay?
There won't be a new design. New iMac will most likely arrive late this year.
I predict Apple will put in the refreshed Haswell with slightly better performance/power consumption, Thunderbolt 2 ports and maybe Nvidia's new 800-series GPU with lower power consumption. I think 2014 iMac will most likely be a minor one.

Based on the Buyer's Guide here
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Apple doesn't refresh the iMac for some time, seems to be in the 280 day range, and given that we're only in around 159 days it still may be some time before an update comes.
I think this year around it will be a bit less than 280. Because the gpu and cpu of this years upgrade will be out pretty soon. SO I suspect those will be the only new features in the next imac and no point waiting until the hardware is 6 months old. So Im guessing we will see a refresh around summer time.
I've the same opinion. BUT, Broadwell iMac may be announced in Q1 2015. Do you agree?
I think this year around it will be a bit less than 280. Because the gpu and cpu of this years upgrade will be out pretty soon. SO I suspect those will be the only new features in the next imac and no point waiting until the hardware is 6 months old. So Im guessing we will see a refresh around summer time.
What CPU and GPU upgrades do you expect in the near future?
As others have mentioned, the Intel Haswell chipset will be getting a refresh, which will basically just be a 100 MHz more on all chips. Furthermore, Nvidia will be rolling out "new" 800m series GPU's which will be rebranded 700m series cards (680MX was of the same architecture as 700m cards too), but again, with a higher clock rate. Performance will be around 12% on GPU, and 7-10% on CPU if my calculations are correct. Nvidia may release an 880MX later on, which would then be running on the Maxwell architecture (Hoping!).
There won't be a new design. New iMac will most likely arrive late this year.
I predict Apple will put in the refreshed Haswell with slightly better performance/power consumption, Thunderbolt 2 ports and maybe Nvidia's new 800-series GPU with lower power consumption. I think 2014 iMac will most likely be a minor one.
THe 8gb vram on the 880 MX, even if its the same card as the 780mx is still also a nice upgrade, for those of us that use After effects. So its a welcomming upgrade.
Both the new intel cpu and the nvidia gpu will come out 2nd quarter of 2014, so I assume apple will plan to release a new imac with only those upgrades around the same time. I see no reason for them not to. Usually when they wait to update is when they have bigger plans, like new design or whatever. I can´t see what else they can possibly have in plans for this update, so it will be a silent incremental upgrade. But Ill buy it, its enough of an upgrade to be a decent difference from the late 2012 imac.
q2 2015.i've the same opinion. But, broadwell imac may be announced in q1 2015. Do you agree?
As others have mentioned, the Intel Haswell chipset will be getting a refresh, which will basically just be a 100 MHz more on all chips. Furthermore, Nvidia will be rolling out "new" 800m series GPU's which will be rebranded 700m series cards (680MX was of the same architecture as 700m cards too), but again, with a higher clock rate. Performance will be around 12% on GPU, and 7-10% on CPU if my calculations are correct. Nvidia may release an 880MX later on, which would then be running on the Maxwell architecture (Hoping!).
So what is the scoop for 800m series this year??? All still staying Keplar based?
Well, the 780 never had an MX model, only an M model. The X was specifying that it was an under clocked version of the desktop model (680MX). 780m though, was running the GK104 chip, same as the 680MX, and so will the 880M. An 880MX would run GM104 or 107. I don't really see the purpose of 8GB though. I mean even with After Effects, you could impossibly use that much VRAM. If the GPU were like 4x the speed, 8 gigs could be used, but the GPU can't utilize all that memory anyway. If After Effects is trying to push 8 gigs of data on VRAM, Adobe are idiots. I mean, at that point you might as well put the data in system memory, and transfer if to the GPU as needed, as the latency wouldn't be that much bigger, as the 880M is running on a 256-bit interface, with an effective clock of 5000MHz. (Sufficient for between 2-5 gigs. 5 Really pushing the latency).