Julia v1.9 Release Notes
========================

New language features
---------------------


Language changes
----------------


Compiler/Runtime improvements
-----------------------------


Command-line option changes
---------------------------

* In Linux and Windows, `--threads=auto` now tries to infer usable number of CPUs from the
  process affinity which is set typically in HPC and cloud environments ([#42340]).

Multi-threading changes
-----------------------


Build system changes
--------------------


New library functions
---------------------


New library features
--------------------


Standard library changes
------------------------

#### Package Manager

#### LinearAlgebra

#### Markdown

#### Printf

#### Random

#### REPL

#### SparseArrays

#### Dates

#### Downloads

#### Statistics

#### Sockets

#### Tar

#### Distributed

#### UUIDs

#### Mmap

#### DelimitedFiles


Deprecated or removed
---------------------


External dependencies
---------------------


Tooling Improvements
---------------------

<!--- generated by NEWS-update.jl: -->