Is there mid and late 2020 iMac 27?

[levmc]

I got a 2017 iMac 27 and I know that there is a 2019 version and 2020 version, but is there only one version that came out it in 2020? (no two versions in 2020?)

I ask because I saw an iMac that was labelled as "late 2020" on eBay. But it seems like 2020 version came out at August 2020, which seems more like mid-2020 to me.

 

[Nermal]

There's only one 2020 version.