diff --git a/extensions/desktop/command-chain-kde/Makefile b/extensions/desktop/command-chain-kde/Makefile
index e72336be49..b49007db6b 100644
--- a/extensions/desktop/command-chain-kde/Makefile
+++ b/extensions/desktop/command-chain-kde/Makefile
@@ -10,3 +10,4 @@ scripts = hooks-configure-desktop hooks-configure-fonts desktop-launch run
 install: $(scripts)
 
 .PHONY: $(scripts)
+.NOTPARALLEL:
diff --git a/extensions/desktop/command-chain/Makefile b/extensions/desktop/command-chain/Makefile
index c8062f6da3..7aac1eb5ec 100644
--- a/extensions/desktop/command-chain/Makefile
+++ b/extensions/desktop/command-chain/Makefile
@@ -10,3 +10,4 @@ scripts = hooks-configure-fonts desktop-launch run
 install: $(scripts)
 
 .PHONY: $(scripts)
+.NOTPARALLEL:
diff --git a/snapcraft/extensions/gnome.py b/snapcraft/extensions/gnome.py
index 49aa6ea547..82c71e7807 100644
--- a/snapcraft/extensions/gnome.py
+++ b/snapcraft/extensions/gnome.py
@@ -26,7 +26,11 @@
 from .extension import get_extensions_data_dir, prepend_to_env
 from .gpu_extension import GPUExtension
 
-_SDK_SNAP = {"core22": "gnome-42-2204-sdk", "core24": "gnome-46-2404-sdk"}
+_SDK_SNAP = {
+    "core22": "gnome-42-2204-sdk",
+    "core24": "gnome-46-2404-sdk",
+    "core26": "gnome-core26-sdk",
+}
 _PLATFORM_TRANSLATION = {"core22": "2204", "core24": "2404"}
 
 
@@ -74,7 +78,7 @@ class GNOME(GPUExtension):
     @staticmethod
     @override
     def get_supported_bases() -> tuple[str, ...]:
-        return ("core22", "core24")
+        return ("core22", "core24", "core26")
 
     @staticmethod
     @override
@@ -88,7 +92,10 @@ def is_experimental(base: str | None) -> bool:
 
     @override
     def get_app_snippet(self, *, app_name: str) -> dict[str, Any]:
-        if self.yaml_data["base"] == "core24":
+        base_str = self.yaml_data["base"]
+        base = int(base_str.removeprefix("core"))
+
+        if base >= 24:
             snippet = super().get_app_snippet(app_name=app_name)
         else:
             snippet = {}
@@ -119,7 +126,9 @@ def gnome_snaps(self) -> GNOMESnaps:
 
         # use the sdk snap if it is defined in any part's build-snaps
         # otherwise, assume it is built into the content snap
-        matcher = re.compile(r"gnome-\d+-" + _PLATFORM_TRANSLATION[base] + r"-sdk.*")
+        matcher = re.compile(
+            r"gnome-(?:\d+-)?" + _PLATFORM_TRANSLATION.get(base, base) + r"-sdk.*"
+        )
         sdk_snap_candidates = [s for s in build_snaps if matcher.match(s)]
         if sdk_snap_candidates:
             sdk_snap = sdk_snap_candidates[0].split("/")[0]
@@ -134,10 +143,11 @@ def gnome_snaps(self) -> GNOMESnaps:
     @override
     def get_root_snippet(self) -> dict[str, Any]:
         platform_snap = self.gnome_snaps.content
-        base = self.yaml_data["base"]
+        base_str = self.yaml_data["base"]
+        base = int(base_str.removeprefix("core"))
 
         snippet: dict[str, Any]
-        if base == "core24":
+        if base >= 24:
             snippet = super().get_root_snippet()
         else:
             snippet = {
@@ -207,6 +217,14 @@ def get_root_snippet(self) -> dict[str, Any]:
                 "bind": "$SNAP/gnome-platform/usr/share/xml/iso-codes"
             },
         }
+
+        if base >= 26:
+            snippet["layout"] = {
+                **snippet.get("layout", {}),
+                "/usr/libexec/glycin-loaders": {
+                    "bind": "$SNAP/gnome-platform/usr/libexec/glycin-loaders"
+                },
+            }
         return snippet
 
     @override
@@ -327,8 +345,10 @@ def get_parts_snippet(self) -> dict[str, Any]:
         """
         source = get_extensions_data_dir() / "desktop" / "command-chain"
 
-        base = self.yaml_data["base"]
-        if base != "core22":
+        base_str = self.yaml_data["base"]
+        base = int(base_str.removeprefix("core"))
+
+        if base >= 24:
             parts = {f"gnome/{k}": v for k, v in super().get_parts_snippet().items()}
         else:
             parts = {}
@@ -336,7 +356,29 @@ def get_parts_snippet(self) -> dict[str, Any]:
         parts["gnome/sdk"] = {
             "source": str(source),
             "plugin": "make",
-            **({"build-snaps": [_SDK_SNAP[base]]} if self.gnome_snaps.builtin else {}),
+            **(
+                {"build-snaps": [_SDK_SNAP[base_str]]}
+                if self.gnome_snaps.builtin
+                else {}
+            ),
         }
 
+        if base >= 26:
+            cleanup_srcs = [
+                self.gnome_snaps.sdk,
+                "gtk-common-themes",
+            ]
+            escaped_srcs = [f'"{w}"' for w in cleanup_srcs]
+            parts["gnome/cleanup"] = {
+                "after": list(self.yaml_data.get("parts", {}).keys()),
+                "plugin": "nil",
+                "build-snaps": cleanup_srcs,
+                "override-prime": (
+                    "set -eux\n"
+                    f"for snap in {' '.join(escaped_srcs)}; do\n"
+                    '    cd "/snap/$snap/current" && find . -type f,l -name "*.so.*" -exec rm -f "$CRAFT_PRIME/{}" \\;\n'
+                    "done\n"
+                ),
+            }
+
         return parts
diff --git a/tests/unit/commands/test_list_extensions.py b/tests/unit/commands/test_list_extensions.py
index e29706f3a8..05a0195a90 100644
--- a/tests/unit/commands/test_list_extensions.py
+++ b/tests/unit/commands/test_list_extensions.py
@@ -41,7 +41,7 @@ def test_command(emitter, fake_app_config):
         dotnet9                core24
         env-injector           core24
         fake-extension         core22, core24, core26
-        gnome                  core22, core24
+        gnome                  core22, core24, core26
         gpu                    core22, core24, core26
         kde-neon               core22, core24
         kde-neon-6             core22, core24
diff --git a/tests/unit/extensions/test_gnome.py b/tests/unit/extensions/test_gnome.py
index 56be47fc70..1c8256c4dc 100644
--- a/tests/unit/extensions/test_gnome.py
+++ b/tests/unit/extensions/test_gnome.py
@@ -38,6 +38,13 @@ def gnome_extension_core24():
     )
 
 
+@pytest.fixture
+def gnome_extension_core26():
+    return gnome.GNOME(
+        yaml_data={"base": "core26", "parts": {}}, arch="amd64", target_arch="amd64"
+    )
+
+
 @pytest.fixture
 def gnome_extension_with_build_snap():
     return gnome.GNOME(
@@ -68,14 +75,14 @@ def gnome_extension_with_default_build_snap_from_latest_edge():
 
 
 def test_get_supported_bases():
-    assert gnome.GNOME.get_supported_bases() == ("core22", "core24")
+    assert gnome.GNOME.get_supported_bases() == ("core22", "core24", "core26")
 
 
 def test_get_supported_confinement():
     assert gnome.GNOME.get_supported_confinement() == ("strict", "devmode")
 
 
-@pytest.mark.parametrize("base", ["core22", "core24"])
+@pytest.mark.parametrize("base", ["core22", "core24", "core26"])
 def test_is_experimental(base):
     assert gnome.GNOME.is_experimental(base=base) is False
 
@@ -97,6 +104,16 @@ def test_get_app_snippet_core24(gnome_extension_core24):
     }
 
 
+def test_get_app_snippet_core26(gnome_extension_core26):
+    assert gnome_extension_core26.get_app_snippet(app_name="test-app") == {
+        "command-chain": [
+            "snap/command-chain/gpu-2604-wrapper",
+            "snap/command-chain/desktop-launch",
+        ],
+        "plugs": ["desktop", "desktop-legacy", "gsettings", "opengl", "wayland", "x11"],
+    }
+
+
 def test_get_root_snippet(gnome_extension):
     assert gnome_extension.get_root_snippet() == {
         "assumes": ["snapd2.43"],
@@ -173,6 +190,14 @@ def test_get_root_snippet_with_gpu(gnome_extension_core24):
     }
 
 
+def test_get_root_snippet_with_glycin(gnome_extension_core26):
+    snippet = gnome_extension_core26.get_root_snippet()
+
+    assert snippet["layout"]["/usr/libexec/glycin-loaders"] == {
+        "bind": "$SNAP/gnome-platform/usr/libexec/glycin-loaders",
+    }
+
+
 def test_get_root_snippet_with_external_sdk(gnome_extension_with_build_snap):
     assert gnome_extension_with_build_snap.get_root_snippet() == {
         "assumes": ["snapd2.43"],
@@ -451,6 +476,40 @@ def test_get_parts_snippet_core24(gnome_extension_core24):
     }
 
 
+def test_get_parts_snippet_core26(gnome_extension_core26):
+    assert gnome_extension_core26.get_parts_snippet() == {
+        "gnome/gpu/wrapper": {
+            "source": str(get_extensions_data_dir() / "gpu" / "command-chain"),
+            "plugin": "make",
+            "make-parameters": ["GPU_INTERFACE=gpu-2604"],
+        },
+        "gnome/gpu/cleanup": {
+            "after": [],
+            "source": "https://github.com/canonical/gpu-snap.git",
+            "plugin": "nil",
+            "override-prime": (
+                "craftctl default\n${CRAFT_PART_SRC}/bin/gpu-2604-cleanup mesa-2604\n"
+            ),
+        },
+        "gnome/sdk": {
+            "source": str(get_extensions_data_dir() / "desktop" / "command-chain"),
+            "plugin": "make",
+            "build-snaps": ["gnome-core26-sdk"],
+        },
+        "gnome/cleanup": {
+            "after": [],
+            "plugin": "nil",
+            "build-snaps": ["gnome-core26-sdk", "gtk-common-themes"],
+            "override-prime": (
+                "set -eux\n"
+                'for snap in "gnome-core26-sdk" "gtk-common-themes"; do\n'
+                '    cd "/snap/$snap/current" && find . -type f,l -name "*.so.*" -exec rm -f "$CRAFT_PRIME/{}" \\;\n'
+                "done\n"
+            ),
+        },
+    }
+
+
 def test_get_parts_snippet_with_external_sdk(gnome_extension_with_build_snap):
     assert gnome_extension_with_build_snap.get_parts_snippet() == {
         "gnome/sdk": {