Finalize Pyomo for 6.9.4 release

.coin-or/projDesc.xml

@@ -226,8 +226,8 @@ Carl D. Laird, Chair, Pyomo Management Committee, claird at andrew dot cmu dot e
 			     Use explicit overrides to disable use of automated
 			     version reporting.
 			-->
-			<stableVersionNumber>6.9.3</stableVersionNumber>
-			<releaseNumber>6.9.3</releaseNumber>
+			<stableVersionNumber>6.9.4</stableVersionNumber>
+			<releaseNumber>6.9.4</releaseNumber>
 
 		</developmentStatus>
 

CHANGELOG.md

@@ -1,6 +1,35 @@
 Pyomo CHANGELOG
 ===============
 
+-------------------------------------------------------------------------------
+Pyomo 6.9.4   (27 Aug 2025)
+-------------------------------------------------------------------------------
+
+- General
+  - Cleanup `collections` module (#3708)
+  - Work around environments where `IntEnum.__doc__` is None (#3711)
+  - Standardize 'multiprocessing' deferred import (#3702)
+  - Resolve `capture_output(capture_fd=True)` deadlock on Windows (#3679)
+- Core
+  - Bugfix: standard form with fixed variables (#3704)
+- DAE
+  - Fix simulator bug (#3692)
+- Solver Interfaces
+  - Add reporting of SCIP node count to solver results (#3691)
+  - Create API version attribute for different solver generations (#3699)
+  - Ipopt_v2: update options processing (#3693)
+  - Expanded LegacySolverWrapper fixes (#3700)
+- Testing
+  - Update GAMS download to new "latest" link (#3706)
+  - New TPL cache version on GHA workflows (#3705)
+- Contributed Packages
+  - benders: Added support for HiGHS solver (#3686)
+  - DoE: Add grey box objectives (#3606)
+  - Parmest: Correct two very old test skips (#3697)
+  - Parmest: Extend capability for weighted SSE objective (#3535)
+  - PyROS: Modify two solver tests (#3694)
+  - sensitivity_toolbox: Sensitivity calculation for named expressions (#3685)
+
 -------------------------------------------------------------------------------
 Pyomo 6.9.3   (6 Aug 2025)
 -------------------------------------------------------------------------------

RELEASE.md

@@ -1,4 +1,4 @@
-We are pleased to announce the release of Pyomo 6.9.3.
+We are pleased to announce the release of Pyomo 6.9.4.
 
 Pyomo is a collection of Python software packages that supports a
 diverse set of optimization capabilities for formulating and analyzing

doc/OnlineDocs/explanation/solvers/pyros.rst

@@ -964,7 +964,7 @@ Observe that the log contains the following information:
 
    ==============================================================================
    PyROS: The Pyomo Robust Optimization Solver, v1.3.9.
-          Pyomo version: 6.9.3dev0
+          Pyomo version: 6.9.3
           Commit hash: unknown
           Invoked at UTC 2025-07-21T00:00:00.000000+00:00
 

pyomo/contrib/pyros/config.py

@@ -83,7 +83,7 @@ def _deprecated_separation_priority_order(obj):
             "The argument 'separation_priority_order' is deprecated. "
             "Consider specifying separation priorities by declaring, on your "
             "model, Suffix components with local name `pyros_separation_priority`.",
-            version="6.9.3dev0",
+            version="6.9.3",
         )
     return separation_priority_order
 
@@ -776,7 +776,7 @@ def pyros_config():
                 until, within a group, constraint violations
                 are detected.
 
-                *Deprecated since Pyomo 6.9.3dev0*: The argument
+                *Deprecated since Pyomo 6.9.3*: The argument
                 `separation_priority_order` is deprecated.
                 Specify separation priorities by declaring, on your
                 model, `Suffix` components with local name

pyomo/version/info.py

@@ -27,8 +27,8 @@
 major = 6
 minor = 9
 micro = 4
-releaselevel = 'invalid'
-# releaselevel = 'final'
+# releaselevel = 'invalid'
+releaselevel = 'final'
 serial = 0
 
 if releaselevel == 'final':