644: You Have to Invert

Pre-show: G4 Doorbell Pro

Bespoke 3D-printed mount
Fancy-schmancy Marco-recommended Flashlight

What betas are we running?

Virtual Buddy

𝑥OS 26 & Version Numbers

iOS Apps built against old SDKs get 19.0; new ones get 26.0 (via Gui Rambo)

ProcessInfo
/System/Library/CoreServices/SystemVersionCompat.plist

Tahoe returns 16 when reqiured for compatibility and 26 otherwise (via Howard Oakley)

SYSTEM_VERSION_COMPAT=1 = 16
null or SYSTEM_VERSION_COMPAT=0 = 26

Liquid Glass

Adopting Liquid Glass

Don’t Liquid Glass All the Things

Not present in macOS? (via Steve Troughton-Smith)
Liquid Glass clone in Flutter (via Dave Wood)
Fluid Glass in React (via Francisco Tolmasky)

macOS Tahoe

Whimsy returns! (via Minimal Nerd)
Squircle Jail

Squircle ∆ (via Yannic Lung)
Say Hello to the New Look of App Icons
Squircle Jailbreak! (via Simon B Støvring)

Speaking of rounded corners…

Build an AppKit App with the New Design

Chonky stoplights

macOS 26 window control buttons are no longer smol (via Avi Drissman)
-[NSTitledFrame sizeOfTitlebarButtons]

Missing title bars
Missing menu bar fixes

GlassBar
Boring Old Menu Bar

Alignment

Tahoe dialog
Tahoe dialog, center-icon mockup
Left-aligned title bar text images

Finder icon controversy

Stephen tried Icon Composer with solid results
Michael Flarup
D. Griffin Jones

Icons next to menu items

Previously in the HIG (via Stefan Habel)
Today in the HIG

Tabs contrast

Terminal tabs

Safari contrast

Ridiculous pink in the toolbar in Safari

Arrow cursor has been updated

Discovery by Nathan Manceaux-Panot
Hand cursor as well

Floating elements & compartmentalization

Screenshot
We all float down here
Mario Alberto Guzmán’s observations
Steve Troughton-Smith’s observations

Clipboard history

Stephen Robles
Overview video

Future of Rosetta

Ars Technica

New disk image format: ASIF

Howard Oakley write-up

iOS 26

UI impressions
New slider thumbs reveal new info (via Niki Tonsky)

Video

iPadOS 26

Open window limits (via Steve Troughton-Smith)

Previously, in Mac OS X 10.0…

Slideover is 💀
UI impressions

Testing Liquid Glass

UIDesignRequiresCompatibility

Vision Pro 4K? (via Steve Troughton-Smith)
Post-show: WWDC Favorites

Apple’s transcription APIs

John Voorhees’s write-up
Yap

Generable
SwitchGlass

Members-only ATP Overtime: Apple snubbed Gruber, so who got the nod?

Interview roundup on MacRumors
Joanna Stern

7-minute excerpt
Full 24-minute interview

Mark from Tom’s Guide & Lance from TechRadar

Sponsored by:

Hello Fresh: America’s #1 Meal Kit
Squarespace: Save 10% off your first purchase of a website or domain using code atp.

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644: You Have to Invert

June 19, 2025
02:22:24 •
Download (137 MB)

Impressions of iOS 26, macOS Tahoe, iPadOS 26, and Liquid Glass after a week of using the first developer betas. Surprisingly, we have thoughts.

• Pre-show: G4 Doorbell Pro

• Bespoke 3D-printed mount

• Fancy-schmancy Marco-recommended Flashlight

• What betas are we running?

• Virtual Buddy

• 𝑥OS 26 & Version Numbers

• iOS Apps built against old SDKs get 19.0; new ones get 26.0 (via Gui Rambo)

• ProcessInfo

• /System/Library/CoreServices/SystemVersionCompat.plist

• Tahoe returns 16 when reqiured for compatibility and 26 otherwise (via Howard Oakley)

• SYSTEM_VERSION_COMPAT=1 = 16

• null or SYSTEM_VERSION_COMPAT=0 = 26

• Liquid Glass

• Adopting Liquid Glass

• Don’t Liquid Glass All the Things

• Not present in macOS? (via Steve Troughton-Smith)

• Liquid Glass clone in Flutter (via Dave Wood)

• Fluid Glass in React (via Francisco Tolmasky)

• macOS Tahoe

• Whimsy returns! (via Minimal Nerd)

• Squircle Jail

• Squircle ∆ (via Yannic Lung)

• Say Hello to the New Look of App Icons

• Squircle Jailbreak! (via Simon B Støvring)

• Speaking of rounded corners…

• Build an AppKit App with the New Design

• Chonky stoplights

• macOS 26 window control buttons are no longer smol (via Avi Drissman)

• -[NSTitledFrame sizeOfTitlebarButtons]

• Missing title bars

• Missing menu bar fixes

• GlassBar

• Boring Old Menu Bar

• Alignment

• Tahoe dialog

• Tahoe dialog, center-icon mockup

• Left-aligned title bar text images

• Finder icon controversy

• Stephen tried Icon Composer with solid results

• Michael Flarup

• D. Griffin Jones

• Icons next to menu items

• Previously in the HIG (via Stefan Habel)

• Today in the HIG

• Tabs contrast

• Terminal tabs

• Safari contrast

• Ridiculous pink in the toolbar in Safari

• Arrow cursor has been updated

• Discovery by Nathan Manceaux-Panot

• Hand cursor as well

• Floating elements & compartmentalization

• Screenshot

• We all float down here

• Mario Alberto Guzmán’s observations

• Steve Troughton-Smith’s observations

• Clipboard history

• Stephen Robles

• Overview video

• Future of Rosetta

• Ars Technica

• New disk image format: ASIF

• Howard Oakley write-up

• iOS 26

• UI impressions

• New slider thumbs reveal new info (via Niki Tonsky)

• Video

• iPadOS 26

• Open window limits (via Steve Troughton-Smith)

• Previously, in Mac OS X 10.0…

• Slideover is 💀

• UI impressions

• Testing Liquid Glass

• UIDesignRequiresCompatibility

• Vision Pro 4K? (via Steve Troughton-Smith)

• Post-show: WWDC Favorites

• Apple’s transcription APIs

• John Voorhees’s write-up

• Yap

• Generable

• SwitchGlass

• Members-only ATP Overtime: Apple snubbed Gruber, so who got the nod?

• Interview roundup on MacRumors

• Joanna Stern

• 7-minute excerpt

• Full 24-minute interview

• Mark from Tom’s Guide & Lance from TechRadar

• Hello Fresh: America’s #1 Meal Kit

• Squarespace: Save 10% off your first purchase of a website or domain using code atp.

Become a member for ATP Overtime, ad-free episodes, member specials, and our early-release, unedited “bootleg” feed!

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