diff --git a/CHANGELOG/CHANGELOG-v1.5.0.md b/CHANGELOG/CHANGELOG-v1.5.0.md
new file mode 100644
index 0000000000..718cb6f61a
--- /dev/null
+++ b/CHANGELOG/CHANGELOG-v1.5.0.md
@@ -0,0 +1,111 @@
+# Flyte 1.5 release
+
+## Platform
+
+We're laying the foundation for an improved experience to help performance investigations. Stay tuned for more details!
+
+We can now submit Ray jobs to separate clusters (other than the one flytepropeller is running). Thanks to https://github.com/flyteorg/flyteplugins/pull/321.
+
+Several bug fixes, including:
+- [Fix fast-cache bug on first node event](https://github.com/flyteorg/flyteadmin/pull/483)
+- [Split flyte-binary services into http and grpc in helm charts](https://github.com/flyteorg/flyte/pull/3518)
+
+### Database Migrations
+One of the improvements planned requires us to clean up our database migrations. We have done so in this release so you should see a series of new migrations. 
+These should have zero impact if you are otherwise up-to-date on migrations (which is why they are all labeled `noop`) but please be aware that it will add a minute or so to the 
+init container/command that runs the migrations in the default Helm charts. Notably, because these should be a no-op, they also do not come with any rollback commands. 
+If you experience any issues, please let us know.
+
+## Flytekit
+
+Python 3.11 is now officially supported.
+
+### Revamped Data subsystem
+The data persistence layer was completely revamped. We now rely exclusively on [fsspec](https://filesystem-spec.readthedocs.io/en/latest/) to handle IO. 
+
+Most users will benefit from a more performant IO subsystem, in other words,
+no change is needed in user code.
+
+
+The data persistence layer has undergone a thorough overhaul. We now exclusively utilize [fsspec](https://filesystem-spec.readthedocs.io/en/latest/) for managing input and output operations.
+
+For the majority of users, the improved IO subsystem provides enhanced performance, meaning that no modifications are required in their existing code.
+
+This change opened the door for flytekit to rely on fsspec streaming capabilities. For example, let's say we want to stream a file, now we're able to do:
+
+```
+@task
+def copy_file(ff: FlyteFile) -> FlyteFile:
+    new_file = FlyteFile.new_remote_file(ff.remote_path)
+    with ff.open("r", cache_type="simplecache", cache_options={}) as r:
+        with new_file.open("w") as w:
+            w.write(r.read())
+    return new_file
+```
+
+This feature is marked as experimental. We'd love feedback on the API!
+
+### Limited support for partial tasks
+We can use [functools.partial](https://docs.python.org/3/library/functools.html#functools.partial) to "freeze" 
+some task arguments. Let's take a look at an example where we partially fix the parameter for a task:
+
+```
+@task
+def t1(a: int, b: str) -> str:
+    return f"{a} -> {b}"
+    
+t1_fixed_b = functools.partial(t1, b="hello")
+
+@workflow
+def wf(a: int) -> str:
+    return t1_fixed_b(a=a)
+```
+
+Notice how calls to `t1_fixed_b` do not need to specify the `b` parameter.
+
+This also works for [MapTasks](https://docs.flyte.org/projects/cookbook/en/latest/auto/core/control_flow/map_task.html#sphx-glr-auto-core-control-flow-map-task-py) in a limited capacity. For example:
+
+```
+from flytekit import task, workflow, partial, map_task
+
+@task
+def t1(x: int, y: float) -> float:
+    return x + y
+
+@workflow
+def wf(y: List[float]):
+   partial_t1 = partial(t1, x=5)
+   return map_task(partial_t1)(y=y)
+```
+
+We are currently seeking feedback on this feature, and as a result, it is labeled as experimental for now. 
+
+Also worth mentioning that fixing parameters of type list is not currently supported. For example, if we try to register this workflow:
+
+```
+from functools import partial
+from typing import List
+from flytekit import task, workflow, map_task
+
+@task
+def t(a: int, xs: List[int]) -> str:
+    return f"{a} {xs}"
+
+@workflow
+def wf():
+    partial_t = partial(t, xs=[1, 2, 3])
+    map_task(partial_t)(a=[1, 2])
+```
+
+We're going to see this error:
+
+```
+❯ pyflyte run workflows/example.py wf
+Failed with Unknown Exception <class 'ValueError'> Reason: Map tasks do not support partial tasks with lists as inputs.
+Map tasks do not support partial tasks with lists as inputs.
+```
+
+## Flyteconsole
+
+Multiple bug fixes around [waiting for external inputs](https://docs.flyte.org/projects/cookbook/en/latest/auto/core/control_flow/waiting_for_external_inputs.html#waiting-for-external-inputs). 
+Better support for dataclasses in the launch form.
diff --git a/docker/sandbox-bundled/manifests/complete.yaml b/docker/sandbox-bundled/manifests/complete.yaml
index 8fa57825cd..54a9c2fd94 100644
--- a/docker/sandbox-bundled/manifests/complete.yaml
+++ b/docker/sandbox-bundled/manifests/complete.yaml
@@ -765,7 +765,7 @@ type: Opaque
 ---
 apiVersion: v1
 data:
-  haSharedSecret: NU1vMUdiMnN5MmljVWF3ZQ==
+  haSharedSecret: aGFYUUZuc0taTnNLNTlRYQ==
   proxyPassword: ""
   proxyUsername: ""
 kind: Secret
@@ -1267,7 +1267,7 @@ spec:
     metadata:
       annotations:
         checksum/config: 8f50e768255a87f078ba8b9879a0c174c3e045ffb46ac8723d2eedbe293c8d81
-        checksum/secret: 25f07b0f475d807f49f6d44cb0de18b1e87996d1b511931e677338a858fe556a
+        checksum/secret: 4567c2202516b7dc8bd3c42c748a4805ab7f614e37befd326f18b74ea59f6a4b
       labels:
         app: docker-registry
         release: flyte-sandbox
diff --git a/docker/sandbox-bundled/manifests/dev.yaml b/docker/sandbox-bundled/manifests/dev.yaml
index 354f2198e5..d35a400386 100644
--- a/docker/sandbox-bundled/manifests/dev.yaml
+++ b/docker/sandbox-bundled/manifests/dev.yaml
@@ -499,7 +499,7 @@ metadata:
 ---
 apiVersion: v1
 data:
-  haSharedSecret: RUJ2S096NjZYNzRUMmZjUQ==
+  haSharedSecret: UVJ6V3JRNFVudGdhTHdLQQ==
   proxyPassword: ""
   proxyUsername: ""
 kind: Secret
@@ -875,7 +875,7 @@ spec:
     metadata:
       annotations:
         checksum/config: 8f50e768255a87f078ba8b9879a0c174c3e045ffb46ac8723d2eedbe293c8d81
-        checksum/secret: 7f079563e7be4d4f7de5cd86196cbea04fec3fdaf5a06cfe19362e4132a1c7e0
+        checksum/secret: 0e247305b4d5871b515115a452319a63c2d10973004a80c83d7b24dac0cf2fa7
       labels:
         app: docker-registry
         release: flyte-sandbox
diff --git a/rsts/conf.py b/rsts/conf.py
index c7bc313bf4..cbab3c3f02 100644
--- a/rsts/conf.py
+++ b/rsts/conf.py
@@ -30,7 +30,7 @@
 # The short X.Y version
 version = ""
 # The full version, including alpha/beta/rc tags
-release = "1.5.0a0"
+release = "1.5.0"
 
 # -- General configuration ---------------------------------------------------