“Portrait mode properly supported on iPad Pro 2020”
This quote is from the latest release notes. I was stoked to see this and imagined the last part was a typo, but unfortunately it wasn’t. From what I know, they (2018 version and 2020 version) are practically identical, apart from one more core, some camera and lidar gimmicky stuff + expanded RAM for also lower storage models.
Would be interesting to see an explanation to why this could only be implemented for the very last version of iPad Pro.