I was bitten by two major issues with Julia 1.13.2:
`Pkg.add` fails with `Unknown package: <name>` on Julia 1.13.2 · Issue #4866 · JuliaLang/Pkg.jl · GitHub . I implemented a workaround in one of my packages, but it probably also effect other packages. It will hopefully be fixed in 1.13.3.
And Building a system image using Julia 1.13 fails (due to excessive RAM usage) · Issue #63141 · JuliaLang/julia · GitHub . The bad thing with this issue: If you have only 16 GB RAM, there is no workaround other then using an older Julia version.
While this does not effect me directly, only my Github runners, it does effect my students.
As long as system images are needed to achieve reasonable TTFX times, I would suggest to add an automated test for #63141 to the release process.