Dr. Jeff Bezanson, co-creator of the Julia programming language and cofounder of JuliaHub, leads this informative walkthrough of the features coming in the Julia 1.9 release. Now in late beta, Julia 1.9 fixes the longstanding TTFX, or Time to First Execution issue (often called Time to First Plot). Package precompilation now saves native code into a “package image”, accelerating the first plot operation to a fraction of a second. There are several other improvements to threading, packages, and compilation, with an exhaustive list in the Julia 1.9 release notes.