Could you please share them?
Let me start by saying that I have no idea when Apple will refresh the iMac. I doubt anyone on this forum knows for sure, and if they do, they probably would not tell anyone. My thoughts on the matter are based on my on observations and guesses, not from some secret source I have. So, I could be totally wrong, and Apple might refresh the iMac as early as tomorrow.
As for my thoughts, I named a few already in the post:
I agree, and I would add that I wouldn't be surprised if a new iMac would launch until the end of the year or 2019.
I have a few educated guesses why I think this.
One obvious thing would be the lack of rumors. There was only one recently, and the timeline of that one was maybe the end of the year.
Another reason is that the iMac Pro has not been out that long. A new iMac might cannibalize iMac Pro sales.
i think I remember a few WWDCs that didn't have any new Macs with it.
Here are some other guesses:
WWDC is typically software focused, not saying an iMac refresh couldn't happen, I looked it up and last WWDC the iMac was refreshed with the mid-2017 iMacs. But, I also looked it up, and in the past 11 years, only once was the iMac refreshed during the WWDC, and that was last year.
The iMac is overdo for a major redesign. An argument could be made saying that the iMac was already redesigned with the 5K, but I consider the last major one to be Late 2012. Maybe Apple might hold off on a refresh to do a redesign. I guess it could be done at the WWDC, but for reasons I already mentioned about possible cannibalization of the iMac Pro, Apple might hold off a bit for a redesign.
No GPU - I can't remember where I read about it, but I remember seeing that there is not a suitable GPU for a refreshed iMac. That leaves Apple with a choice to reuse the same GPUs as the 2017's, or use the one in the iMac Pro, which again, could cannibalize sales of it.
I'm willing to wait until October
I think this is more likely than at the WWDC, Apple has had many iMac refreshes/launches/announcements during October.
I'd be really interested in hearing them because I plan to buy one on the next refresh and from my understanding it's obvious that there will be a refresh in the next few months
I wouldn't base your purchases off of my guesses, as clearly I have know idea when. I would recommend going by this:
If you need it, get it. It is not once an iMac refresh/redesign happens the 2017 iMacs will be crap.
If you want it, but can wait, just wait. I am not sure how badly you need a new iMac, but as long as you can get by with what you have, the next iMac might be worth the wait.
Lastly, be careful what you wish for. The new iMacs might be out at the WWDC, and it could be a situation like the 2014 Mac Minis where they were considered a downgrade from the 2012s. The next iMac could have soldered RAM, no user replaceable parts, and less ports. Who knows, you might end up getting the 2017 iMac anyway.
if you have convincing arguments that it's "extremely unlikely" I'd love to hear them because I'd reconsider my buying plan.
These are just guesses, I would base your decision on when to get an iMac on other things, such as needs and wants.
This, IMO, is like saying that Apple can't update the iPad or the MacBook because of their Pro counterparts.
I assume you are referring to this comment?:
Another reason is that the iMac Pro has not been out that long. A new iMac might cannibalize iMac Pro sales.
I would say that in the past, the Pro line of Apple products were differentiated from the rest of the product like based off design, specs, and for the Mac desktop line, expandability and user replaceable parts. Having the Pro and non-Pro lines so different enabled Apple to release/refresh them at the same time or close together. For the iMac, I think that the Pro version is not so differentiated from the non-Pro version, that having an update of the cheaper non-Pro so close to the Pro could take away potential sales from the more expensive Pro line.
Apple has always been able to keep separate product lines for different markets while makong sure they all sell well.
I agree, at least until recently. Before, there was only a few "Pro" Apple products, and they were very different from their non-pro counter parts. Now, there are more Pro products that are not that different from their non-Pro counterparts.