The next Crystal release, 1.20 is scheduled for 2026-04-16. As usual, this is precluded by a two-week feature freeze period, starting 2026-04-02 (yesterday). We’ll be using this time until the release to consolidate the changes and fix bugs. A preview of the release notes is available: Crystal 1.2…

Sadly, no release of execution contexts, yet. Not that they’re unstable, quite the opposite (:flexed_biceps:) but there are a few MT issues that need further investigation that didn’t make it into 1.20, notably: Thread-safety for union types · Issue #15085 · crystal-lang/crystal · GitHub (impacts …

Upcoming 1.20 release

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straight-shoota Split this topic April 7, 2026, 9:46am 3

2 posts were split to a new topic: Constant time cryptography

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Upcoming 1.20 release

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