diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2db890e..58e6ec3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,17 @@ All notable changes to Buzznode are documented here, following
 
 ## [Unreleased]
 
+## [0.5.4] - 2026-07-30
+
+### Added
+
+- Expose the shared desktop screenshot endpoint as the Launcher `preview`
+  interface.
+
+### Changed
+
+- Update the shared Launcher desktop base to `0.1.2`.
+
 ## [0.5.3] - 2026-07-30
 
 ### Changed
diff --git a/Dockerfile b/Dockerfile
index bc2c992..7a96b98 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,7 +10,7 @@
 # Buzznode connects to an existing relay and deliberately contains neither the
 # Buzz Desktop client nor local relay/backing services.
 
-ARG DESKTOP_IMAGE=ghcr.io/pdparchitect/launcher-image-base-desktop:0.1.1
+ARG DESKTOP_IMAGE=ghcr.io/pdparchitect/launcher-image-base-desktop:0.1.2
 
 # Upstream publishes a Linux package only for AMD64. Extract its headless tools
 # there; on ARM64, build the same immutable tag and exact commit from source.
diff --git a/Makefile b/Makefile
index e634abd..74ac6ea 100644
--- a/Makefile
+++ b/Makefile
@@ -12,7 +12,7 @@ TARGETARCH ?= $(word 2,$(subst /, ,$(PLATFORM)))
 BUZZ_VERSION ?= 0.5.2
 BUZZ_DEB_SHA256 ?= 3f022bc31ed579e045946e6acab8483639bcb94e62c1e70f67b97b22f8f879c5
 BUZZ_SOURCE_SHA ?= 3e48f1b2365d326ee1c9582448d86a99b44ecd5d
-DESKTOP_IMAGE ?= ghcr.io/pdparchitect/launcher-image-base-desktop:0.1.1
+DESKTOP_IMAGE ?= ghcr.io/pdparchitect/launcher-image-base-desktop:0.1.2
 CODEX_VERSION ?= 0.145.0
 CLAUDE_CODE_VERSION ?= 2.1.220
 CODEX_ACP_VERSION ?= 1.1.7
@@ -90,6 +90,7 @@ check:
 	@grep -q '\[ -n "$${PS1:-}" \]' overlay/etc/bash.bashrc.d/buzznode-prompt.sh
 	@test "$$(jq -er '.schemaVersion' launcher/application.json)" = 2
 	@! jq -e 'has("image")' launcher/application.json >/dev/null
+	@jq -e '.interfaces.preview.kind == "preview" and .interfaces.preview.port == 6902 and .interfaces.preview.path == "/preview.jpg"' launcher/application.json >/dev/null
 	@for asset in $$(jq -er '.media.icon, .media.cover, .media.screenshots[].source' launcher/application.json); do \
 		test -f "launcher/$$asset"; \
 	done
diff --git a/VERSION b/VERSION
index be14282..7d85683 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.5.3
+0.5.4
diff --git a/launcher/application.json b/launcher/application.json
index 99bb6d9..ced454b 100644
--- a/launcher/application.json
+++ b/launcher/application.json
@@ -25,6 +25,11 @@
       "kind": "kasmweb",
       "port": 6901,
       "path": "/"
+    },
+    "preview": {
+      "kind": "preview",
+      "port": 6902,
+      "path": "/preview.jpg"
     }
   },
   "memory": "4g",