Which platform do you mean? I’ll assume you want a quick summary of the most recent, noteworthy features across the major desktop OSes (Windows, macOS, and the leading Linux desktop). Below are the latest headline features and when they arrived, with sources.

Windows (Windows 11 — latest 2025 updates)

• Major AI/Copilot upgrades: expanded Copilot Vision availability, new “Hey Copilot” voice opt‑in, a text interaction option for Vision, and experimental “Copilot Actions” (agents that can perform limited real‑world tasks like bookings/orders). (Microsoft’s Oct 2025 AI push). (Reuters.com)
• Release packaging: Windows 11 version 25H2 (late 2025) is an enablement package with no new user features (keeps parity with 24H2) and removes some legacy tools (PowerShell 2.0, WMIC). Expected general availability in late Sep–Oct 2025. (windowscentral.com)

macOS (Apple)

• macOS Tahoe (numbered “26”) — announced at WWDC 2025, scheduled for fall 2025: refreshed “Liquid Glass” visual design (Dock, icons, theming), major Spotlight/search improvements (app launching, direct actions, filters), tighter Continuity (Phone app integration for calls/Live Activities), and expanded Apple Intelligence features (Live Translations in Messages/FaceTime, Genmoji, enhanced Shortcuts). Developer/graphics updates include Metal 4 and game-related platform features. Developer beta available after WWDC; public beta followed later in 2025. (theverge.com)

Ubuntu (desktop Linux)

• Ubuntu 25.10 “Questing Quokka” (released Oct 9, 2025): GNOME 49, new default apps (Ptyxis terminal, Loupe image viewer), improved Bluetooth audio and HDR brightness controls, memory‑safe rewrites of key utilities (sudo‑rs and Rust coreutils/uutils by default), experimental TPM‑backed full disk encryption, NTS enabled by default, and Linux kernel 6.17 with nested virtualization on Arm and other platform improvements. (Canonical release notes). (Canonical.com)

Other notes

• Many vendors are focusing 2025 releases on AI/assistant integration, security (TPM/FDE, memory‑safe tooling), and developer toolchain updates (new runtimes, compilers, Metal/graphics or kernel features). See the individual OS links above for platform specifics and rollout timing. (Reuters.com)

If you want: I can dive deeper into one OS (detailed feature list, hardware compatibility, upgrade steps, or how the new AI features work and privacy/security settings). Which OS should I expand on?