diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 77a3f463f..40074e83c 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.9.0a1
+current_version = 1.9.0b1
 parse = (?P<major>[\d]+) # major version number
 	\.(?P<minor>[\d]+) # minor version number
 	\.(?P<patch>[\d]+) # patch version number
diff --git a/.changes/1.9.0-b1.md b/.changes/1.9.0-b1.md
new file mode 100644
index 000000000..b6daee41e
--- /dev/null
+++ b/.changes/1.9.0-b1.md
@@ -0,0 +1,31 @@
+## dbt-spark 1.9.0-b1 - October 01, 2024
+
+### Features
+
+- Add tests for cross-database `cast` macro ([#1028](https://github.com/dbt-labs/dbt-spark/issues/1028))
+- Cross-database `date` macro ([#1031](https://github.com/dbt-labs/dbt-spark/issues/1031))
+- Allow configuring snapshot column names ([#1096](https://github.com/dbt-labs/dbt-spark/issues/1096))
+- Support custom ODBC connection parameters via `connection_string_suffix` config ([#1092](https://github.com/dbt-labs/dbt-spark/issues/1092))
+- Add Microbatch Strategy to dbt-spark ([#1109](https://github.com/dbt-labs/dbt-spark/issues/1109))
+
+### Fixes
+
+- Fix incremental python models error where Databricks could not find the temp table transaction logs ([#1033](https://github.com/dbt-labs/dbt-spark/issues/1033))
+
+### Under the Hood
+
+- Lazy load agate to improve performance ([#1049](https://github.com/dbt-labs/dbt-spark/issues/1049))
+
+### Dependencies
+
+- Update freezegun requirement from ~=1.3 to ~=1.4 ([#966](https://github.com/dbt-labs/dbt-spark/pull/966))
+- Bump actions/download-artifact from 3 to 4 ([#1010](https://github.com/dbt-labs/dbt-spark/pull/1010))
+- Bump actions/upload-artifact from 3 to 4 ([#1011](https://github.com/dbt-labs/dbt-spark/pull/1011))
+- Bump dbt-labs/actions from 1.1.0 to 1.1.1 ([#1012](https://github.com/dbt-labs/dbt-spark/pull/1012))
+- Update wheel requirement from ~=0.42 to ~=0.43 ([#1035](https://github.com/dbt-labs/dbt-spark/pull/1035))
+- Update pytest-xdist requirement from ~=3.5 to ~=3.6 ([#1073](https://github.com/dbt-labs/dbt-spark/pull/1073))
+- Loosen pin on pre-commit from 3.7.0 to 3.7 ([#1074](https://github.com/dbt-labs/dbt-spark/pull/1074))
+
+### Contributors
+- [@jpoley](https://github.com/jpoley) ([#1092](https://github.com/dbt-labs/dbt-spark/issues/1092))
+- [@nilan3](https://github.com/nilan3) ([#1092](https://github.com/dbt-labs/dbt-spark/issues/1092))
diff --git a/.changes/unreleased/Dependencies-20231219-222211.yaml b/.changes/1.9.0/Dependencies-20231219-222211.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20231219-222211.yaml
rename to .changes/1.9.0/Dependencies-20231219-222211.yaml
diff --git a/.changes/unreleased/Dependencies-20240419-024814.yaml b/.changes/1.9.0/Dependencies-20240419-024814.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20240419-024814.yaml
rename to .changes/1.9.0/Dependencies-20240419-024814.yaml
diff --git a/.changes/unreleased/Dependencies-20240419-024818.yaml b/.changes/1.9.0/Dependencies-20240419-024818.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20240419-024818.yaml
rename to .changes/1.9.0/Dependencies-20240419-024818.yaml
diff --git a/.changes/unreleased/Dependencies-20240419-024820.yaml b/.changes/1.9.0/Dependencies-20240419-024820.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20240419-024820.yaml
rename to .changes/1.9.0/Dependencies-20240419-024820.yaml
diff --git a/.changes/unreleased/Dependencies-20240503-224157.yaml b/.changes/1.9.0/Dependencies-20240503-224157.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20240503-224157.yaml
rename to .changes/1.9.0/Dependencies-20240503-224157.yaml
diff --git a/.changes/unreleased/Dependencies-20240718-223145.yaml b/.changes/1.9.0/Dependencies-20240718-223145.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20240718-223145.yaml
rename to .changes/1.9.0/Dependencies-20240718-223145.yaml
diff --git a/.changes/unreleased/Dependencies-20240718-223238.yaml b/.changes/1.9.0/Dependencies-20240718-223238.yaml
similarity index 100%
rename from .changes/unreleased/Dependencies-20240718-223238.yaml
rename to .changes/1.9.0/Dependencies-20240718-223238.yaml
diff --git a/.changes/unreleased/Features-20240430-185723.yaml b/.changes/1.9.0/Features-20240430-185723.yaml
similarity index 100%
rename from .changes/unreleased/Features-20240430-185723.yaml
rename to .changes/1.9.0/Features-20240430-185723.yaml
diff --git a/.changes/unreleased/Features-20240501-151904.yaml b/.changes/1.9.0/Features-20240501-151904.yaml
similarity index 100%
rename from .changes/unreleased/Features-20240501-151904.yaml
rename to .changes/1.9.0/Features-20240501-151904.yaml
diff --git a/.changes/unreleased/Features-20240903-161003.yaml b/.changes/1.9.0/Features-20240903-161003.yaml
similarity index 100%
rename from .changes/unreleased/Features-20240903-161003.yaml
rename to .changes/1.9.0/Features-20240903-161003.yaml
diff --git a/.changes/unreleased/Features-20240910-175846.yaml b/.changes/1.9.0/Features-20240910-175846.yaml
similarity index 100%
rename from .changes/unreleased/Features-20240910-175846.yaml
rename to .changes/1.9.0/Features-20240910-175846.yaml
diff --git a/.changes/unreleased/Features-20240925-125242.yaml b/.changes/1.9.0/Features-20240925-125242.yaml
similarity index 100%
rename from .changes/unreleased/Features-20240925-125242.yaml
rename to .changes/1.9.0/Features-20240925-125242.yaml
diff --git a/.changes/unreleased/Fixes-20240513-160121.yaml b/.changes/1.9.0/Fixes-20240513-160121.yaml
similarity index 100%
rename from .changes/unreleased/Fixes-20240513-160121.yaml
rename to .changes/1.9.0/Fixes-20240513-160121.yaml
diff --git a/.changes/unreleased/Under the Hood-20240612-195629.yaml b/.changes/1.9.0/Under the Hood-20240612-195629.yaml
similarity index 100%
rename from .changes/unreleased/Under the Hood-20240612-195629.yaml
rename to .changes/1.9.0/Under the Hood-20240612-195629.yaml
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 36a3ea69a..7679e37bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,10 +5,41 @@
 - "Breaking changes" listed under a version may require action from end users or external maintainers when upgrading to that version.
 - Do not edit this file directly. This file is auto-generated using [changie](https://github.com/miniscruff/changie). For details on how to document a change, see [the contributing guide](https://github.com/dbt-labs/dbt-spark/blob/main/CONTRIBUTING.md#adding-changelog-entry)
 
+## dbt-spark 1.9.0-b1 - October 01, 2024
+
+### Features
+
+- Add tests for cross-database `cast` macro ([#1028](https://github.com/dbt-labs/dbt-spark/issues/1028))
+- Cross-database `date` macro ([#1031](https://github.com/dbt-labs/dbt-spark/issues/1031))
+- Allow configuring snapshot column names ([#1096](https://github.com/dbt-labs/dbt-spark/issues/1096))
+- Support custom ODBC connection parameters via `connection_string_suffix` config ([#1092](https://github.com/dbt-labs/dbt-spark/issues/1092))
+- Add Microbatch Strategy to dbt-spark ([#1109](https://github.com/dbt-labs/dbt-spark/issues/1109))
+
+### Fixes
+
+- Fix incremental python models error where Databricks could not find the temp table transaction logs ([#1033](https://github.com/dbt-labs/dbt-spark/issues/1033))
+
+### Under the Hood
+
+- Lazy load agate to improve performance ([#1049](https://github.com/dbt-labs/dbt-spark/issues/1049))
+
+### Dependencies
+
+- Update freezegun requirement from ~=1.3 to ~=1.4 ([#966](https://github.com/dbt-labs/dbt-spark/pull/966))
+- Bump actions/download-artifact from 3 to 4 ([#1010](https://github.com/dbt-labs/dbt-spark/pull/1010))
+- Bump actions/upload-artifact from 3 to 4 ([#1011](https://github.com/dbt-labs/dbt-spark/pull/1011))
+- Bump dbt-labs/actions from 1.1.0 to 1.1.1 ([#1012](https://github.com/dbt-labs/dbt-spark/pull/1012))
+- Update wheel requirement from ~=0.42 to ~=0.43 ([#1035](https://github.com/dbt-labs/dbt-spark/pull/1035))
+- Update pytest-xdist requirement from ~=3.5 to ~=3.6 ([#1073](https://github.com/dbt-labs/dbt-spark/pull/1073))
+- Loosen pin on pre-commit from 3.7.0 to 3.7 ([#1074](https://github.com/dbt-labs/dbt-spark/pull/1074))
+
+### Contributors
+- [@jpoley](https://github.com/jpoley) ([#1092](https://github.com/dbt-labs/dbt-spark/issues/1092))
+- [@nilan3](https://github.com/nilan3) ([#1092](https://github.com/dbt-labs/dbt-spark/issues/1092))
+
+
 ## Previous Releases
 For information on prior major and minor releases, see their changelogs:
-- [1.8](https://github.com/dbt-labs/dbt-spark/blob/1.8.latest/CHANGELOG.md)
-- [1.7](https://github.com/dbt-labs/dbt-spark/blob/1.7.latest/CHANGELOG.md)
 - [1.6](https://github.com/dbt-labs/dbt-spark/blob/1.6.latest/CHANGELOG.md)
 - [1.5](https://github.com/dbt-labs/dbt-spark/blob/1.5.latest/CHANGELOG.md)
 - [1.4](https://github.com/dbt-labs/dbt-spark/blob/1.4.latest/CHANGELOG.md)
diff --git a/dbt/adapters/spark/__version__.py b/dbt/adapters/spark/__version__.py
index 6698ed64c..a4077fff2 100644
--- a/dbt/adapters/spark/__version__.py
+++ b/dbt/adapters/spark/__version__.py
@@ -1 +1 @@
-version = "1.9.0a1"
+version = "1.9.0b1"
diff --git a/setup.py b/setup.py
index cf8ff5691..406c181d5 100644
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,7 @@ def _get_plugin_version_dict():
 
 
 package_name = "dbt-spark"
-package_version = "1.9.0a1"
+package_version = "1.9.0b1"
 description = """The Apache Spark adapter plugin for dbt"""
 
 odbc_extras = ["pyodbc~=5.1.0"]