I'm looking for the change log / issue list / release notes for iPad Classic version 18.0.1.
Release notes can be found on the Product Hub/Documents. iPad Classic release notes can be found here:
What about the change log? It's not being posted with the other clients.
Mobile App Releases
iPad Classic Release Notes have been posted. The release notes simply indicate Classic iPad will now be compatible with all versions since Summer 16sp, not just the last four. No fixes, only that the app will have better compatibility going forward.