First impression after installing, the “Get Started” button looked disabled. It wasn’t its just poorly designed and clicking it did the job. This (see screenshot) is shown after the wizard that informs you about the changes in this upgrade finishes.
Oh, btw: The wizard uses “Continue” buttons that look like Apple meant for you to hunt around to find them, but then decided only to hide them half heartedly.
cc @wendythedruid — the updates you asked for shall be appearing in this thread… 🫡
I immediately ran into a new gripe: The sidebar icons in Finder and in System Settings now use the same size, and you can change them, but because Finder uses way too large leading, it works better with small icons, while System Setting works better with medium icons. No way to change these separately (anymore? I think I it was possible in Sequoia).
Also: I set Finder to always show the tab bar some OS versions ago, the preference stuck (good) and it looks like Tahoe (= ugly).
macOS did not respect my my selected voice for the text to speech features. It also did not forget.
The setting is hidden more or less poorly in System Settings > Accessibility > Read & Speak > System voice > info-i-icon.
To restore the voice settings, I had to navigate there, and select the voice that was already selected, again.
By combining the tinted look with reduced transparency, I effectively turned off #LiquidGlass in macOS Tahoe (and on my iPad as well).
Its still not pretty, but hey… #WWDC26 is in 67 days (according to Apple Intelligence).