diff --git a/CHANGES.md b/CHANGES.md
index 0dad9afa1f0f93dface562f1867a6188f00f9e73..208cc7b897801f5b0d354bb6e512f5857a754c7f 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -2,6 +2,24 @@
+**VECTO v4.3.4-DEV (10-03-2025)**
+
+This development release addresses the issue discussed on previous workshops concerning the definition of Thermal Derating for electric motors and IEPC. The modifications implemented are the following:
+
+1. A new definition is proposed for torque limits in derating mode and transition to derating mode (through merge request !326, which describes the new equation used).
+2. A specific correction is added for IEPC recently declared overload error due to downshift with high inertia effect, allowing for those cases to run without any issue (Merge request !324).
+
+The new derating mode definition can generate changes in VECTO results for any vehicle equipped with an electric motor or IEPC, therefore stakeholders are invited to test this development release and provide feedback before introducing the modifications in a future VECTO official release.
+
+Issues tentatively addressed by this version (the list could change according to discussions that will follow): #761, #767, #826, #830, #850, #867, #877, #878, #886, #888, #889, #893, #939 (and clone #940, #959), #941, #942, #943, #947, #955, #956, #957, #958, #960, #962, #963, #969, #970, #971, #974 (and clone #975), #982, #983.
+
+- Bug Fixes
+
+ * CodeEU n.a.: EM-IEPC Thermal Derating - Tq_max and Buffer Mods (vecto/vecto!326)
+ * CodeEU n.a.: Add Driving Actions for IEPC gearshift (vecto/vecto!324)
+
+
+
**VECTO v4.3.3 Official Release (04-03-2025)**
diff --git a/Directory.Build.props b/Directory.Build.props
index c3b174e29b83f9f95893220e0a38a97ad3019345..5e1641e94e84f40001e40471ec0ee93163b83b86 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -16,7 +16,7 @@
<Deterministic>true</Deterministic>
<!-- Set to true for VectoCore to fix Ninject version conflicts-->
<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
- <Version>4.3.3</Version>
+ <Version>4.3.4</Version>
<DefineTrace>false</DefineTrace>
<DisableDiagnosticTracing>true</DisableDiagnosticTracing>
<RemoveIntegerChecks>true</RemoveIntegerChecks>
diff --git a/Documentation/User Manual Source/Release Notes Vecto4.x.pdf b/Documentation/User Manual Source/Release Notes Vecto4.x.pdf
index fde31e2f487b03074d4baa72e3c4f8b8579be1ad..e6dc8f0200342cf81ac4ae04005234af11dc8849 100644
Binary files a/Documentation/User Manual Source/Release Notes Vecto4.x.pdf and b/Documentation/User Manual Source/Release Notes Vecto4.x.pdf differ
diff --git a/Documentation/User Manual Source/ReleaseNotesMDs/ReleaseNotesVecto4x.md b/Documentation/User Manual Source/ReleaseNotesMDs/ReleaseNotesVecto4x.md
index 0db6477feed86672d6d4f28ae410b8411e78c919..2cec1fa1fca2360f3c988d329de79d153667d5fa 100644
--- a/Documentation/User Manual Source/ReleaseNotesMDs/ReleaseNotesVecto4x.md
+++ b/Documentation/User Manual Source/ReleaseNotesMDs/ReleaseNotesVecto4x.md
@@ -6,6 +6,26 @@
+# VECTO v4.3.4-DEV (10-03-2025)
+
+This development release addresses the issue discussed on previous workshops concerning the definition of Thermal Derating for electric motors and IEPC. The modifications implemented are the following:
+
+1. A new definition is proposed for torque limits in derating mode and transition to derating mode (through merge request !326, which describes the new equation used).
+2. A specific correction is added for IEPC recently declared overload error due to downshift with high inertia effect, allowing for those cases to run without any issue (Merge request !324).
+
+The new derating mode definition can generate changes in VECTO results for any vehicle equipped with an electric motor or IEPC, therefore stakeholders are invited to test this development release and provide feedback before introducing the modifications in a future VECTO official release.
+
+Issues tentatively addressed by this version (the list could change according to discussions that will follow): #761, #767, #826, #830, #850, #867, #877, #878, #886, #888, #889, #893, #939 (and clone #940, #959), #941, #942, #943, #947, #955, #956, #957, #958, #960, #962, #963, #969, #970, #971, #974 (and clone #975), #982, #983.
+
+## Bug Fixes
+
+- EM-IEPC Thermal Derating - Tq_max and Buffer Mods (vecto/vecto!326)
+
+- Add Driving Actions for IEPC gearshift (vecto/vecto!324)
+
+
+
+
# VECTO v4.3.3 Official Release (04-03-2025)
diff --git a/Documentation/User Manual Source/ReleaseNotesMDs/release_notes.md b/Documentation/User Manual Source/ReleaseNotesMDs/release_notes.md
index ce32d3532a536c6508d83aac2cb8c4adcf26a4b1..ad0a09645884e2629699dbbc49ff741f7e3d0bec 100644
--- a/Documentation/User Manual Source/ReleaseNotesMDs/release_notes.md
+++ b/Documentation/User Manual Source/ReleaseNotesMDs/release_notes.md
@@ -1,22 +1,18 @@
-## VECTO v4.3.3 Official Release (04-03-2025)
+## VECTO v4.3.4-DEV (10-03-2025)
+This development release addresses the issue discussed on previous workshops concerning the definition of Thermal Derating for electric motors and IEPC. The modifications implemented are the following:
-### Bug Fixes
-
-- Check if XML element is signed (#950) (vecto/vecto!314)
-
-- NgTankSystem optional for HEV lorries MRF XSD (vecto/vecto!315)
-
-- fix: monitoring report for dual fuel vehicles (vecto/vecto!318)
+1. A new definition is proposed for torque limits in derating mode and transition to derating mode (through merge request !326, which describes the new equation used).
+2. A specific correction is added for IEPC recently declared overload error due to downshift with high inertia effect, allowing for those cases to run without any issue (Merge request !324).
+
+The new derating mode definition can generate changes in VECTO results for any vehicle equipped with an electric motor or IEPC, therefore stakeholders are invited to test this development release and provide feedback before introducing the modifications in a future VECTO official release.
+
+Issues tentatively addressed by this version (the list could change according to discussions that will follow): #761, #767, #826, #830, #850, #867, #877, #878, #886, #888, #889, #893, #939 (and clone #940, #959), #941, #942, #943, #947, #955, #956, #957, #958, #960, #962, #963, #969, #970, #971, #974 (and clone #975), #982, #983.
-- fix: secure XML loading against external entity injection (vecto/vecto!319)
-
-- fix: correct interim supercap reader type (vecto/vecto!320)
-
-- fix: parameter IDs for XSDs v2.3 and v2.6 (vecto/vecto!322)
+### Bug Fixes
-### Documentation
+- EM-IEPC Thermal Derating - Tq_max and Buffer Mods (vecto/vecto!326)
-- Update XSD parameter IDs documentation (vecto/vecto!327)
+- Add Driving Actions for IEPC gearshift (vecto/vecto!324)
diff --git a/Documentation/User Manual/6-changelog/changelog.md b/Documentation/User Manual/6-changelog/changelog.md
index 0dad9afa1f0f93dface562f1867a6188f00f9e73..208cc7b897801f5b0d354bb6e512f5857a754c7f 100644
--- a/Documentation/User Manual/6-changelog/changelog.md
+++ b/Documentation/User Manual/6-changelog/changelog.md
@@ -2,6 +2,24 @@
+**VECTO v4.3.4-DEV (10-03-2025)**
+
+This development release addresses the issue discussed on previous workshops concerning the definition of Thermal Derating for electric motors and IEPC. The modifications implemented are the following:
+
+1. A new definition is proposed for torque limits in derating mode and transition to derating mode (through merge request !326, which describes the new equation used).
+2. A specific correction is added for IEPC recently declared overload error due to downshift with high inertia effect, allowing for those cases to run without any issue (Merge request !324).
+
+The new derating mode definition can generate changes in VECTO results for any vehicle equipped with an electric motor or IEPC, therefore stakeholders are invited to test this development release and provide feedback before introducing the modifications in a future VECTO official release.
+
+Issues tentatively addressed by this version (the list could change according to discussions that will follow): #761, #767, #826, #830, #850, #867, #877, #878, #886, #888, #889, #893, #939 (and clone #940, #959), #941, #942, #943, #947, #955, #956, #957, #958, #960, #962, #963, #969, #970, #971, #974 (and clone #975), #982, #983.
+
+- Bug Fixes
+
+ * CodeEU n.a.: EM-IEPC Thermal Derating - Tq_max and Buffer Mods (vecto/vecto!326)
+ * CodeEU n.a.: Add Driving Actions for IEPC gearshift (vecto/vecto!324)
+
+
+
**VECTO v4.3.3 Official Release (04-03-2025)**
diff --git a/Documentation/User Manual/help.html b/Documentation/User Manual/help.html
index 59919c0916562db6db9bb954b56ee17562f7f359..8dfaa755b94e282c3aaddb847defb706901cf024 100644
--- a/Documentation/User Manual/help.html
+++ b/Documentation/User Manual/help.html
@@ -11000,6 +11000,37 @@ stored as LOG_backup.txt.</p>
</section>
<section id="changelog" class="level1">
<h1>Changelog</h1>
+<p><strong>VECTO v4.3.4-DEV (10-03-2025)</strong></p>
+<p>This development release addresses the issue discussed on previous
+workshops concerning the definition of Thermal Derating for electric
+motors and IEPC. The modifications implemented are the following:</p>
+<ol type="1">
+<li>A new definition is proposed for torque limits in derating mode and
+transition to derating mode (through merge request !326, which describes
+the new equation used).</li>
+<li>A specific correction is added for IEPC recently declared overload
+error due to downshift with high inertia effect, allowing for those
+cases to run without any issue (Merge request !324).</li>
+</ol>
+<p>The new derating mode definition can generate changes in VECTO
+results for any vehicle equipped with an electric motor or IEPC,
+therefore stakeholders are invited to test this development release and
+provide feedback before introducing the modifications in a future VECTO
+official release.</p>
+<p>Issues tentatively addressed by this version (the list could change
+according to discussions that will follow): #761, #767, #826, #830,
+#850, #867, #877, #878, #886, #888, #889, #893, #939 (and clone #940,
+#959), #941, #942, #943, #947, #955, #956, #957, #958, #960, #962, #963,
+#969, #970, #971, #974 (and clone #975), #982, #983.</p>
+<ul>
+<li><p>Bug Fixes</p>
+<ul>
+<li>CodeEU n.a.: EM-IEPC Thermal Derating - Tq_max and Buffer Mods
+(vecto/vecto!326)</li>
+<li>CodeEU n.a.: Add Driving Actions for IEPC gearshift
+(vecto/vecto!324)</li>
+</ul></li>
+</ul>
<p><strong>VECTO v4.3.3 Official Release (04-03-2025)</strong></p>
<ul>
<li><p>Bug Fixes</p>