OmniFocus 3 in slideover mode looks the same as in OF2.
OmniFocus 3 for iOS (slideover mode) - Home Screen
OmniFocus 3 for iOS (slideover mode) - Taking a peek at my actions list in slideover mode.
This will be an easy transition for OF2 users to move over to OF3. This might anger some users who were hoping for a look more similar to Things 3. If you’re asking for something that looks like Things 3, why not just go to Things 3? ¯_(ツ)_/¯
The hard part about releasing a new update is that some users might be angered at a brand new UI because they have grown accustomed to the old UI. If we get a radical UI change, it angers some users who say “I wished it was like the old UI.” I remembered when OF2 arrived and there were a lot a lot of jeers for changing things such moving from checkboxes on the left to status circles on the right.
Can’t win 'em all… ¯_(ツ)_/¯