This will be the last release to support Python3.8.
Add Python 3.13 support.
Add muslinux wheel package.
This will be the last release to support Java 1.8
Builds
dependencies (protobuf, abseil, re2, highs) are now seperated shared libraries
Windows libraries are now dll
Dependencies
C++
Protobuf 29.3
CoinUtils: 2.11.12
Osi: 0.108.11
Clp: 1.17.10
Cgl: 0.60.9
Cbc: 2.10.12
HiGHS: 1.9.0
Scip: v920
benchmark: 1.9.1
Graph
Old graph classes (EbertGraph, StarGraph, ForwardEbertGraph, ForwardStarGraph) have been removed.
Use ReverseArcListGraph<> and ListGraph<> instead. Those are conceptually similar, but typically perform better.
APIs are mostly compatible.
CP-SAT
Improve the no_overlap_2d layer (propagation, presolve, cuts)
Add RandomHalfBranching search heuristics
Improve Cumulative propagation and cuts
Rewrote the hint transformation during presolve. Feasible and complete hints should now be preserved after presolve
Rewrite and optimize the linear expression part of the python layer
Improve shared tree workers, implement job affinity with workers
Add scheduling samples
Support 1-var affine expressions in the Automaton constraint
Support 1-var affine expressions in the Element constraint
Speed up LNS
Tens of fixes for bugs found by fuzzer
Linear Solver
Add WriteModelToMpsFile to MPSolver in Java, Python and .NET
Math Opt
Add Xpress support.
Model Builder
Speedup of the python expression part.
Add HiGHS support.
SCIP
This is likely the last release of SCIP build with glop
We will transition to SCIP with SOPLEX builds
This is already the case for the Bazel build
Known Issues
MathOpt: python_math_opt_solver_test failed on macOS #4460
cmake: MacOS Intel based python wheel do not contains mypy files #4540