Update changelog

Author: T4rk1n

CHANGELOG.md

@@ -2,12 +2,52 @@
 All notable changes to `dash` will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
-## [UNRELEASED]
+## [3.0.0-rc1] - 2025-01-28
+
+## Added
+
+- [#2276](https://github.com/plotly/dash/pull/2276) Python typing definition generation for components `__init__`.
+- [#3035](https://github.com/plotly/dash/pull/3035) `PropType` generation for Typescript components allowing runtime prop validation when in debug mode.
+- [#3066](https://github.com/plotly/dash/pull/3066) Adds `window.dash_component_api` for components developer as alternative to removed `_dashprivate` props.
+  - Add `dash_component_api.useDashContext`, `dash_component_api.DashContext` to access the redux store and loading mechanisms.
+    - `DashContext.componentPath` hold the path to the current component.
+    - `DashContext.useLoading(options?)` selector to get a boolean if the component is loading.
+    - `DashContext.isLoading` in case you need to use outside of a functional component.
+    - `DashContext.useSelector` to create custom selectors for the connected redux store.
+    - `DashContext.useStore` get the Dash app redux store.
+    - `DashContext.useDispatch` to dispatch new actions on the Dash redux store.
+  - Add `dash_component_api.getLayout(path)` to replace `_dashprivate_layout`.
+- [#3029](https://github.com/plotly/dash/pull/3029) Add pip install based hooks to Dash functionalities.
+  - Packages can add an `entry_points` with key `dash-hooks` to their `setup.py` for a module to be run when a Dash app is started.
+  - Add `dash.hooks` methods to hook into Dash apps.
+    - `hooks.layout` takes the layout as argument and must return a layout, can be used to wrap or add to the layout of Dash apps.
+    - `hooks.callback` defines a callback to be added to Dash apps.
+    - `hooks.clientside_callback` defines a clientside callback to be added to Dash apps.
+    - `hooks.setup` is called before a Dash app is started to get an instance of the app as first argument.
+    - `hooks.error` to receive all callback errors.
+    - `hooks.index` to change the `Dash.index_string`.
+
+## Removed
+
+- [#3066](https://github.com/plotly/dash/pull/3066) `loading_state` removed from components props.
+- [#3078](https://github.com/plotly/dash/pull/3078) Deprecations removals
+  - Removed `dash.development.component_loader`, components libraries now required to generate the components with `dash-generate-components`.
+  - `Dash.run_server` has been removed in favor of `Dash.run`.
+  - Removed `dcc.LogoutButton` component.
+  - Renamed all `long` references to `background`.
+
+## Changed
+
+- [#3093](https://github.com/plotly/dash/pull/3093) Changed default React version to 18.3.1
+  - `defaultProps` on functional components now emits a deprecation warning.
+  - Deprecation notice on strings refs.
 
 ## Fixed
 
 - [#3080](https://github.com/plotly/dash/pull/3080) Fix docstring generation for components using single-line or nonstandard-indent leading comments
 - [#3103](https://github.com/plotly/dash/pull/3103) Fix Graph component becomes unresponsive if an invalid figure is passed
+- [#3130](https://github.com/plotly/dash/pull/3130) Fix HOST variable when using conda.
+- [#3066](https://github.com/plotly/dash/pull/3066) Improve performance of context components re-rendering.
 
 ## [2.18.2] - 2024-11-04