diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index d1f09730f..30e6f9c78 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "9.0.0-beta.3"
+  ".": "9.0.0-beta.4"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 17a8bf90d..02846df99 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -143,6 +143,45 @@
   change public consumer defaults. See
   [format-kind migration](docs/canonical-format-kinds-migration.md).
 
+## [9.0.0-beta.4](https://github.com/adcontextprotocol/adcp-client-python/compare/v9.0.0-beta.3...v9.0.0-beta.4) (2026-10-16)
+
+
+### ⚠ BREAKING CHANGES
+
+* **reporting:** row storage tables, provider inputs and locators are renamed to the AdCP names above, REPORTING_ROW_ENCODING_V1 is replaced by REPORTING_ROW_FORMAT_V1 and REPORTING_ROW_ALGORITHM_V1, and {period_date} renders the source timezone date as YYYY-MM-DD instead of the UTC date as yyyy/MM/dd, and a custom key template without {revision_key} is refused unless its binding is read_only. create_schema migrates existing databases; stop older writers first.
+
+### Features
+
+* **client:** cap agent response size by default ([#1504](https://github.com/adcontextprotocol/adcp-client-python/issues/1504)) ([d5195a9](https://github.com/adcontextprotocol/adcp-client-python/commit/d5195a9525239124416741808addcbcf0f0a8a98))
+* **identity:** add experimental AdCP 3.3 agent identity ([#1502](https://github.com/adcontextprotocol/adcp-client-python/issues/1502)) ([3961d1c](https://github.com/adcontextprotocol/adcp-client-python/commit/3961d1cf7a235c4d45673370521b1aec9bc4c496))
+* **reporting:** add current-revision host reads ([#1473](https://github.com/adcontextprotocol/adcp-client-python/issues/1473)) ([13ca2c5](https://github.com/adcontextprotocol/adcp-client-python/commit/13ca2c502818777bf1eef2f2cd5e8bfbac196dcf))
+* **reporting:** add GCS, S3 and Azure Blob row providers ([#1468](https://github.com/adcontextprotocol/adcp-client-python/issues/1468)) ([fde127d](https://github.com/adcontextprotocol/adcp-client-python/commit/fde127db8992bc6f62303ebbfcbf8f0617be33f4))
+* **reporting:** add the shared host change feed and registered consumers ([#1472](https://github.com/adcontextprotocol/adcp-client-python/issues/1472)) ([b7012e0](https://github.com/adcontextprotocol/adcp-client-python/commit/b7012e05591f3e7823314ab39d65cb1cc723324a))
+* **reporting:** align row storage with AdCP stored names and the period date rule ([#1485](https://github.com/adcontextprotocol/adcp-client-python/issues/1485)) ([47084e8](https://github.com/adcontextprotocol/adcp-client-python/commit/47084e83a4a2cfd879db4127e26c3fb54fd73dd8))
+* **reporting:** migrate legacy inline rows to verified chunks ([#1466](https://github.com/adcontextprotocol/adcp-client-python/issues/1466)) ([bf7e3a6](https://github.com/adcontextprotocol/adcp-client-python/commit/bf7e3a62b38975ed037bc8dbd440bfb2ebe440d4))
+* **reporting:** retire expired periods with tombstones and holds ([#1474](https://github.com/adcontextprotocol/adcp-client-python/issues/1474)) ([c527b18](https://github.com/adcontextprotocol/adcp-client-python/commit/c527b1866bf544ca0926eb844b316136a2172a5c))
+* **reporting:** schedule retention in the production worker ([#1476](https://github.com/adcontextprotocol/adcp-client-python/issues/1476)) ([5c23598](https://github.com/adcontextprotocol/adcp-client-python/commit/5c23598b420725987c3ed0f79c923ead19f1d6be))
+* **reporting:** store revision rows as verified chunks in PostgreSQL ([#1464](https://github.com/adcontextprotocol/adcp-client-python/issues/1464)) ([54a133e](https://github.com/adcontextprotocol/adcp-client-python/commit/54a133ed8e1723e20f1d575b68af88e214afede3))
+* **reporting:** sweep abandoned uploads and prune expired row sets ([#1469](https://github.com/adcontextprotocol/adcp-client-python/issues/1469)) ([e32daba](https://github.com/adcontextprotocol/adcp-client-python/commit/e32daba5c78b5c49ebeee25730b42acb0a1c72d6))
+* **reporting:** write row chunks to object storage with fenced uploads ([#1467](https://github.com/adcontextprotocol/adcp-client-python/issues/1467)) ([83f62c9](https://github.com/adcontextprotocol/adcp-client-python/commit/83f62c9bcef7cca65abae376fe796e6df13eb064))
+
+
+### Bug Fixes
+
+* **reporting:** answer unreadable exact revision reads with SERVICE_UNAVAILABLE ([#1471](https://github.com/adcontextprotocol/adcp-client-python/issues/1471)) ([623b2c1](https://github.com/adcontextprotocol/adcp-client-python/commit/623b2c1603d2c59dc3d5429f7e44c469a3550fcb))
+* **reporting:** keep feed consumer checkpoints forward-only ([#1515](https://github.com/adcontextprotocol/adcp-client-python/issues/1515)) ([0de3f57](https://github.com/adcontextprotocol/adcp-client-python/commit/0de3f57c7e3a434c6d774e880663ca8c4908841c)), closes [#1509](https://github.com/adcontextprotocol/adcp-client-python/issues/1509)
+* **reporting:** keep retention moving past stuck work and make it visible ([#1482](https://github.com/adcontextprotocol/adcp-client-python/issues/1482)) ([4623104](https://github.com/adcontextprotocol/adcp-client-python/commit/462310439d05b92cdfe510b9aac571a8a9f28f0c))
+* **reporting:** reject a change page that crossed a concurrent prune ([#1516](https://github.com/adcontextprotocol/adcp-client-python/issues/1516)) ([73d1261](https://github.com/adcontextprotocol/adcp-client-python/commit/73d12611effa9adeb8a588992428a60864e6a006)), closes [#1508](https://github.com/adcontextprotocol/adcp-client-python/issues/1508)
+* **reporting:** truncate account feed pages at the first in-flight change and match JS backoff ([#1483](https://github.com/adcontextprotocol/adcp-client-python/issues/1483)) ([21f4216](https://github.com/adcontextprotocol/adcp-client-python/commit/21f4216addc5e39f30b076288889b57f8d1cb455))
+* **server:** advertise compact output schemas so discovery is servable ([#1507](https://github.com/adcontextprotocol/adcp-client-python/issues/1507)) ([d908aaa](https://github.com/adcontextprotocol/adcp-client-python/commit/d908aaa98caa88e5b0cd992037eb5010dc009da1))
+* **server:** collect stranded defs, memoize the escape hatch, soften a claim ([#1513](https://github.com/adcontextprotocol/adcp-client-python/issues/1513)) ([fc285b0](https://github.com/adcontextprotocol/adcp-client-python/commit/fc285b057406f0e715412d1d53bb86a281503fb2)), closes [#1507](https://github.com/adcontextprotocol/adcp-client-python/issues/1507)
+* **types:** model macro_resolution_capabilities on Format ([#1505](https://github.com/adcontextprotocol/adcp-client-python/issues/1505)) ([eb66de8](https://github.com/adcontextprotocol/adcp-client-python/commit/eb66de84c7445abe0de185947d886290b08eb14f))
+
+
+### Performance Improvements
+
+* **types:** reduce canonical creative serialization overhead ([#1521](https://github.com/adcontextprotocol/adcp-client-python/issues/1521)) ([bde770b](https://github.com/adcontextprotocol/adcp-client-python/commit/bde770b76ab9c07fd6e8bb11394dd868ddb09984))
+
 ## [9.0.0-beta.3](https://github.com/adcontextprotocol/adcp-client-python/compare/v9.0.0-beta.2...v9.0.0-beta.3) (2026-10-10)
 
 
diff --git a/pyproject.toml b/pyproject.toml
index 2aebdd30a..2e420f9d5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "adcp"
-version = "9.0.0b3"
+version = "9.0.0b4"
 description = "Official Python client for the Ad Context Protocol (AdCP)"
 authors = [
     {name = "AdCP Community", email = "maintainers@adcontextprotocol.org"}