I don’t think we’ll see a redesigned iMac for a while. First, as many pointed out, the iMac Pro was just released and it has retained the same form factor. If Apple were to redesign it, that would have been the point in time when they would have done it.
Second, the design is functionally very solid. What needs to change? Maybe smaller bezels. That’s the most logical change, but I think it would also require a change to the overall size. I think the changes to the iMac design will come as a direct result of the changes to components (thinner displayed, cooler chips, etc.). I think that will drive the change, because given today’s technology the iMac is pretty much perfectly able to accommodate. Therefore, change isn’t really viable.
Second, the design is functionally very solid. What needs to change? Maybe smaller bezels. That’s the most logical change, but I think it would also require a change to the overall size. I think the changes to the iMac design will come as a direct result of the changes to components (thinner displayed, cooler chips, etc.). I think that will drive the change, because given today’s technology the iMac is pretty much perfectly able to accommodate. Therefore, change isn’t really viable.