I know I'm in a minority but I totally agree with those posting comments asking where the Mac rumours are (rumors for my friends over the pond). I'm (still) waiting for Mac Pro news and there are many waiting on iMac news.
I get the whole "Apple sells loads of iPhones and iPads bla bla bla" and you're right about that but it's generally more tech oriented people who visit Mac Rumors and many of us are waiting for Mac news.
I feel sure iMac changes won't be long but for the Pro Tim said "later next year". I don't like the words "next year" and dislike the word "later" in that sentence even more.
Trying to stay positive, I feel sure that both desktops will receive design changes inspired by the latest tech updates and Apple's wish to ditch optical drives. Could be interesting. When it happens. Eventually.