Considering how the iPhone range has been managed:
The 21.5 " could stick around as the low cost alternative with HDD, price cuts, no development and perhaps no BTO ("iMac SE"=iPhone SE). Cost sensitive customers.
The 27 " might be split into redesigned 23 and >=27" and go all SSD and T2 etc with the 23 as the lower cost option of the two (iMac = iPhone 11 and iPhone XR). Average customers.
The iMP is waiting for an XDR screen and CPU/GPU upgrade all know to arrive in the autumn and hence is out of this equation entirely.
(iMac Pro=iPhone Pro). Demanding customers. I know the MP exist but an all Apple setup is twice the price of an iMP.
That would explain the lead times but will increase the complexity of the iMac line. However, compared to other PC vendors, the Apple line of computers would still have smaller number of variants. I counted about 20 lines of computers with different forms at HP home page.
Keynotes are getting less interesting every year. Make some good videos at put these on the home page. If people want to get information they search the net. They are not waiting for WWDC Keynote because the majority of Mac user do not know it exits or does not bother.
I can imagine though that it is derirable for lots of people to have a look at a newly designed iMac in stores before ordering one and store lockdown just prevented that. I looked at the iPhone 11 Pro in store and was surprised by the weight and did not like it (I have a 6). If it is a radically different design, for example the iMac concept made from a bent sheet of glass, many people will want to see it before buying.
The 21.5 " could stick around as the low cost alternative with HDD, price cuts, no development and perhaps no BTO ("iMac SE"=iPhone SE). Cost sensitive customers.
The 27 " might be split into redesigned 23 and >=27" and go all SSD and T2 etc with the 23 as the lower cost option of the two (iMac = iPhone 11 and iPhone XR). Average customers.
The iMP is waiting for an XDR screen and CPU/GPU upgrade all know to arrive in the autumn and hence is out of this equation entirely.
(iMac Pro=iPhone Pro). Demanding customers. I know the MP exist but an all Apple setup is twice the price of an iMP.
That would explain the lead times but will increase the complexity of the iMac line. However, compared to other PC vendors, the Apple line of computers would still have smaller number of variants. I counted about 20 lines of computers with different forms at HP home page.
Keynotes are getting less interesting every year. Make some good videos at put these on the home page. If people want to get information they search the net. They are not waiting for WWDC Keynote because the majority of Mac user do not know it exits or does not bother.
I can imagine though that it is derirable for lots of people to have a look at a newly designed iMac in stores before ordering one and store lockdown just prevented that. I looked at the iPhone 11 Pro in store and was surprised by the weight and did not like it (I have a 6). If it is a radically different design, for example the iMac concept made from a bent sheet of glass, many people will want to see it before buying.