I was referring to AMD's keynote. I think there is a good chance Apple will at least announce the iMacs at the WWDC but very likely the machine will be available by the end of August, which gives time to stock some initial GPUs from AMD.
However, it has happened in the past that Apple introduced new Macs along with the phone. (otherwise, the usual slot is October)
We will need to get closer to the date (AMD's) to understand whether they will introduce just the Big Navi (21
) card or at least the refreshed RDNA (23/24 best candidates so far for the iMacs). I think we will need to wait for January to see RDNA2's low- and mid-end cards, therefore it may be that the best an iMac can expect is a refreshed 5700XT in its high-end 27/X" model.
I would be satisfied with this high-end config:
500 nits (perhaps 650 for better HDR?) 5K screen
1080p webcam
4 mics with NC
(whishlist: FaceID and a new mouse)
Dolby Atmos improved speakers
Hey Siri support
BT 5.0/51
Wifi 6
i9 10c/20t 10900K 3.7/5.3(#youwish) GHz 20MB cache
DDR4 2933 MHz 40/32 GB (if there is/isn't a RAM door available)
T2/T3 chip
Refreshed 5700 XT 8GB GDDR6 (around 11 Tflops?)
2 TB SSD
10 Gbit/s Ethernet
2/4 TB3 ports (also USB4 and USB-C @20Gbps?)
2 USBA ports
1 audio out port (wishlist: bring back the optical output!)
(I honestly couldn't care less to have an SD reader on the back, it's so annoying to use)
I might wait for the IMP to see what happens with their base one to see what would be better for me.