The next release Crystal 1.10 release is scheduled for October 9.
As usual, this is precluded by a two-week freeze period starting next week on September 25. We’ll be using this time to consolidate the release and only bug fixes will be merged.
The current HEAD of the master branch serves as a preview of the release. You can obtain pre-release builds from current nightlies or build directly from master.
We appreciate any report of regressions caused by our latest nightly builds.
Instructions for installing nightly builds are available at Install Nightly Builds - The Crystal Programming Language
This release is not expected to bring any big impact changes, but many smaller feature enhancements and bug fixes, stabilizing the compiler and standard library.
The most notable language change is the introduction of unlimited block unpacking (https://github.com/crystal-lang/crystal/pull/11597).