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Tesla reopens $50,000 Roadster reservations ahead of October reveal

Tesla has reopened reservations for its long-delayed Roadster, requiring a $5,000 refundable deposit followed by an additional $45,000 wire transfer within 10 days. The company plans to unveil the car's pricing, specifications and production timeline at an event near Waco, Texas on October 1, having first taken $50,000 deposits for the same car back in 2017.

tvOS 27.2 beta adds four-HomePod surround sound support for Apple TV 4K

Apple's tvOS 27.2 beta 2 now lets users pair four HomePods—two sets of two—wirelessly through the Home app to serve as surround speakers for Apple TV 4K, according to FlatpanelsHD. The feature currently works with Atmos and surround audio from video content, but lacks the ability to assign specific speaker roles like front and rear, and menu or game audio still only plays through the front pair.

Leaked renders detail Samsung Galaxy Tab S12 Plus and Ultra ahead of October 7 launch

Leaked marketing renders, reproduced via Gemini from watermarked Samsung materials, show the Galaxy Tab S12 Plus and Tab S12 Ultra in gray with aluminum unibody designs. The Plus reportedly has a 12.6-inch display, dual speakers and a 10,600mAh battery, while the Ultra keeps its display notch, quad speakers, dual rear cameras and an 11,600mAh battery. Both are said to use MediaTek's Dimensity 9500 chip, with US prices reportedly starting at $1,200 and $1,400 respectively.

Ring Battery Doorbell 2K (2nd Gen) drops to $39.99 on Amazon

Amazon is selling Ring's newly released Battery Doorbell 2K (2nd Gen) for $39.99, down 60% from its $99.99 list price. The device records 2K video with up to 6x Enhanced Zoom and a 140°x140° field of view, and includes Live View, Two-Way Talk, motion alerts, and a rechargeable battery for wireless installation. It's available in Speckled Gray, Speckled White, and Matte Mocha finishes.

Aftershock PC sells $14,150 gaming rig with titanium cherry blossoms that bloom from heat

Australian PC builder Aftershock PC has launched the Cherry Bloom, a liquid-cooled gaming desktop featuring 70 handcrafted titanium-alloy cherry blossoms that mechanically unfurl as the system heats up, with no motors or electronics involved. The system, built in an APNX V2 case, includes an AMD Ryzen 7 9800X3D CPU, 64GB of DDR5 memory, a 1300W power supply and an RTX 5080 GPU, and sells for roughly $14,150 (about £10,650), excluding shipping.

Epoch AI: Cost of matching AI performance fell 47% per quarter since 2023

A new Epoch AI report by Emberson and Roodman finds that the price of achieving a given level of AI performance has dropped roughly 47% per quarter over the past three years, a 13-fold annual decline. The report cites OpenAI's o3, which cost about $0.30 per question to score 75% on GPQA Diamond in January 2025, compared with a much newer model reaching similar scores for a fraction of a cent by mid-2026.

Stanford study finds brain develops from two distinct stem cell lineages

Stanford School of Medicine researchers report that the human brain forms from two separate types of stem cells rather than one uniform source. One lineage, marked by the Otx2 gene, produces the midbrain and forebrain responsible for higher-order thinking and speech, while a distinct stem cell type gives rise to the hindbrain, which governs basic functions like heartbeat and breathing. Researcher Kyle Loh says this finding allows scientists to grow hindbrain neurons in a lab dish for the first time.

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