Release build - 1.21.2b (2026-06-17)

Zen Stable Release

Security

• https://www.mozilla.org/en-US/security/advisories/mfsa2026-57/

New Features

• Updated to Firefox 152.0
• Improved support for more advanced cursor movement commands, including those relating to paragraph boundaries, on macOS.
• On Windows and Linux, you can now copy links via the tab context menu by right-clicking a tab and selecting Share > Copy Link, making it easy to copy a link without switching to the tab first.

Fixes

• Fixed space routing overriding tabs with an explicit container (#14242)
• Fixed background tabs focusing on routed tabs (#14165)
• Fixed opening glance on links while selecting text in links (#8391)
• Other minor bug fixes and improvements

Changes

• Site zooming via keyboard or mouse now offers more zoom levels in smaller increments than before.
• When a PDF or other file that Zen opens directly finishes downloading, it now opens in a background tab if you've switched tabs or closed the original page.