The Daily Index — Wednesday, July 23, 2025 · TLDR Index

Across today’s newsletters

Today’s Index

TLDR

FOLDABLE IPHONE'S DISPLAY SIZES LEAKED

Apple will likely launch its foldable iPhone in the second half of 2026. The device will come with a 7.8-inch inner display and a 5.5-inch outer display. The Samsung Galaxy Z Fold 7 has an 8-inch inner screen and a 6.5-inch outer screen. Apple's foldable iPhone will feature a 'crease-free' inner display and have two rear cameras, one front camera, and a Touch ID power button instead of Face ID.

macrumors.com · 1 min

TLDR AI

ANTHROPIC TESTS MEMORY AND MCP SUPPORT FOR CLAUDE MOBILE APP

Anthropic is preparing a memory and recall capability upgrade to Claude's mobile experience. The feature will enable Claude to retain information across sessions and reference earlier conversations. Claude on the web doesn't have this feature yet - its presence in the iOS code hints at a potential cross-platform rollout in the future.

testingcatalog.com · 2 min

TLDR Web Dev

DON'T ANIMATE HEIGHT!

A performance issue in the Granola note-taking app was caused by animating the `height` property in a CSS audio visualizer. Animating `height` triggers expensive layout, paint, and composite steps in the browser's rendering pipeline. To fix this, Granola replaced the `height` animation with a `transform` animation using two rectangles, achieving the visual effect of stretching without the performance hit.

granola.ai · 5 min

TLDR InfoSec

EXPRESSVPN BUG LEAKED USER IPS IN REMOTE DESKTOP SESSIONS

A security researcher reported a vulnerability in ExpressVPN's Windows client that caused Remote Desktop Protocol (RDP) traffic to bypass the VPN, which could lead to exposing the user's IP. ExpressVPN patched the bug, confirmed that it only impacted RDP traffic, and stated that it was introduced by debug code that was accidentally included in production builds.

bleepingcomputer.com · 2 min

TLDR Crypto

CRYPTO TREASURY FEVER SPREADS TO ETHENA AS $360M SPAC DEAL TARGETS ENA ACCUMULATION

StablecoinX is set to merge with Nasdaq-listed shell TLGY Acquisition Corp under the ticker USDE, raising $360 million from the likes of Pantera, Dragonfly, Galaxy, and Polychain, including $100 million in discounted locked ENA and $260 million in cash. The plan is to amass Ethena's governance token and kickstart a $260 million ENA buyback by the Ethena Foundation. This SPAC-driven treasury play extends Wall Street's crypto balance-sheet strategies into DeFi altcoins, fueling a ~5% intraday ENA lift and a 65% weekly surge.

coindesk.com · 7 min

TLDR

OPENAI AGREED TO PAY ORACLE $30B A YEAR FOR DATA CENTER SERVICES

Oracle disclosed in an SEC filing last month that it had signed a cloud deal that would generate $30 billion a year in revenue. The company that signed that deal has been revealed to be OpenAI. Oracle collectively sold $24.5 billion worth of cloud services in its fiscal 2025 to all customers combined. OpenAI and Oracle still have to build the data center, which will be a costly endeavor.

techcrunch.com · 2 min

TLDR

DEEPMIND'S QUEST FOR SELF-IMPROVING TABLE TENNIS AGENTS

Google DeepMind recently used table tennis as a testbed for its technology, as the sport requires robots to master a confluence of difficult skills - it requires perception and demands exceptionally precise control. This makes table tennis an ideal domain for developing and evaluating robust learning algorithms that can handle real-time interaction, complex physics, high-level reasoning, and the need for adaptive strategies. This article looks at the study and the insights gained from it. One important lesson learned from the project is that VLMs can be leveraged for explainable robot policy search.

spectrum.ieee.org · 5 min

TLDR

GENETICS REIMAGINED

Scientists recently confirmed the healthy births of children through mitochondrial donation. The innovation opens new doors for reproductive choice. It offers at-risk families a viable path to parenthood without the lingering fear of passing on devastating inherited conditions. However, it also opens up the possibility of designer genetics that will be passed down to future generations. Those currently living with conditions will still face daily challenges, but for the next generation, the landscape has changed.

thestatesman.com · 4 min

TLDR

VIBECODING A HIGH PERFORMANCE SYSTEM

This developer recently used agentic coding to build a system to crawl a billion web pages in around 24 hours. Less than 4% of the code was written by hand. The post discusses how AI helped code the tool and where it fell short. AI was a huge boost during the development process. Some of the learnings from this project could also apply to building other high-performance systems.

andrewkchan.dev · 24 min