Same here. Wanted to order today. Whaaaaaat should I do????
I just got the iMac 5k 27" 4 Ghz last week and I plan to return next week. I'm frustrated that it doesn't support Target Display Mode (TDM) meaning that it can't be used as a monitor for another computer. I work from home and want to use it as a monitor for my work laptop when needed.
I did some video editing and I can tell you that this Mac can get very loud during video encoding. When all 4 cores are busy working the fans really ramp up to turbo. Otherwise you can't hear anything until normal activity. I'd prefer the less power hungry and therefore less hot Skylake. I'd appreciate any extra processing power that would come along with it as video encoding of 1080p material can take many many hours. I refuse to buy the MacPro since it's 2013 hardware and there is no 4k or 5k Apple Monitor to plug it into anyway.
I plan to wait until the Spring now...which sucks.