- - Action Cable client now tracks pending subscriptions, adds random jitter and exponential backoff for reconnections, ships an ESM bundle, renames files, and drops IE11 support.
- - Broad deprecations and removals across Rails (Action Mailbox env vars, ActionMailer delivery jobs, Poltergeist/Webkit drivers, IE hacks, SERVER_ADDR header) plus new defaults like always‑enabled CSRF token config and timeout defaults.
- - Security and observability upgrades: stricter open‑redirect protection, static ParseError messages, Server‑Timing middleware, Trusted Types headers, enhanced logging controls, and a new middleware delete! method.
7.0.0
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Active Storage disables libvips unfuzzed image loaders/savers, causing Vips::Error for BMP, ICO, PSD, SVG, JPEG XL, JPEG 2000, Netpbm and other formats – a breaking change for apps using those types
Active Storage disables libvips “unfuzzed” image loaders and savers (e.g., BMP, ICO, PSD, SVG, JPEG‑XL, JPEG‑2000), causing Vips::Error for those formats
Active Storage now disables libvips "unfuzzed" image loaders/savers, raising Vips::Error for BMP, ICO, PSD, SVG, JPEG XL, JPEG 2000, Netpbm, FITS and similar formats – a breaking change for image‑processing applications.