diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9fe0bde..76431d60 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,72 @@
 # Changelog
 
+## 0.3.0
+
+### 🔄 Changes & Deprecations
+
+- **Deprecation of `TimeGPT` Class:**
+  In an effort to streamline our API and align with industry best practices, we're deprecating the `TimeGPT` class in favor of the new `NixtlaClient` class. This change is designed to provide a more intuitive and powerful interface for interacting with our services.
+
+  **Before:**
+  ```python
+  from nixtlats import TimeGPT
+
+  # Initialize the TimeGPT model
+  timegpt = TimeGPT()
+  ```
+
+  **After:**
+  ```python
+  from nixtlats import NixtlaClient
+
+  # Initialize the NixtlaClient
+  nixtla = NixtlaClient()
+  ```
+
+- **Renaming of Configuration Parameters:**
+  To enhance clarity and consistency with other SDKs, we've renamed the `token` parameter to `api_key` and `environment` to `base_url`.
+
+  **Before:**
+  ```python
+  timegpt = TimeGPT(token='YOUR_TOKEN', environment='YOUR_ENVIRONMENT_URL')
+  ```
+
+  **After:**
+  ```python
+  nixtla = NixtlaClient(api_key='YOUR_API_KEY', base_url='YOUR_BASE_URL')
+  ```
+
+- **Introduction of `NixtlaClient.validate_api_key`:**
+  Replacing the previous `NixtlaClient.validate_token` method, this update aligns with the new authentication parameter naming and offers a straightforward way to validate API keys.
+
+  **Before:**
+  ```python
+  timegpt.validate_token()
+  ```
+
+  **After:**
+  ```python
+  nixtla.validate_api_key()
+  ```
+
+- **Environment Variable Changes:**
+  In line with the renaming of parameters, we've updated the environment variables to set up the API key and base URL. The `TIMEGPT_TOKEN` is now replaced with `NIXTLA_API_KEY`, and we've introduced `NIXTLA_BASE_URL` for custom API URLs.
+
+#### **Backward Compatibility & Future Warnings:**
+
+These changes are designed to be backward compatible. However, users can expect to see future warnings when utilizing deprecated features, such as the `TimeGPT` class.
+
+*See full changelog [here](https://github.com/Nixtla/nixtla/releases/v0.3.0).*
+
+## 0.2.0 (Previously Released)
+
+### 🔄 Changes & Deprecations
+
+- **Renaming of Fine-Tuning Parameters:**
+  The `finetune_steps` and `finetune_loss` parameters were renamed to `fewshot_steps` and `fewshot_loss`. Additionally, the model parameter values changed from `short-horizon` and `long-horizon` to `timegpt-1` and `timegpt-1-long-horizon`, with an emphasis on preserving backward compatibility. In version 0.3.0, these changes are deprecated in favor of reverting to the original parameter names and values, ensuring a seamless transition for existing users.
+
+*See full changelog [here](https://github.com/Nixtla/nixtla/releases/v0.2.0).*
+
 ## 0.1.21
 
 ### 🚀 Feature Enhancements
diff --git a/README.md b/README.md
index f5e92f36..9c61a36f 100644
--- a/README.md
+++ b/README.md
@@ -45,11 +45,11 @@ Get started with TimeGPT now:
 df = pd.read_csv('https://raw.githubusercontent.com/Nixtla/transfer-learning-time-series/main/datasets/electricity-short.csv')
 
 from nixtlats import NixtlaClient
-nixtla_client = NixtlaClient(
+nixtla = NixtlaClient(
     # defaults to os.environ.get("NIXTLA_API_KEY")
     api_key = 'my_api_key_provided_by_nixtla'
 )
-fcst_df = nixtla_client.forecast(df, h=24, level=[80, 90])
+fcst_df = nixtla.forecast(df, h=24, level=[80, 90])
 ```
 
 ![](./nbs/img/forecast_readme.png)
diff --git a/nixtlats/__init__.py b/nixtlats/__init__.py
index b26fbc0e..ec305560 100644
--- a/nixtlats/__init__.py
+++ b/nixtlats/__init__.py
@@ -1,3 +1,3 @@
-__version__ = "0.2.0"
+__version__ = "0.3.0"
 __all__ = ["TimeGPT"]
 from .nixtla_client import NixtlaClient, TimeGPT
diff --git a/settings.ini b/settings.ini
index dc956cc7..2b986f42 100644
--- a/settings.ini
+++ b/settings.ini
@@ -8,7 +8,7 @@ author = Nixtla
 author_email = business@nixtla.io
 copyright = Nixtla Inc.
 branch = main
-version = 0.2.0
+version = 0.3.0
 min_python = 3.8
 audience = Developers
 language = English
diff --git a/setup.py b/setup.py
index 5907cb24..fdb0b7fe 100644
--- a/setup.py
+++ b/setup.py
@@ -18,8 +18,8 @@
 
 setuptools.setup(
     name="nixtlats",
-    version="0.2.0",
-    description="TimeGPT SDK",
+    version="0.3.0",
+    description="Python SDK for Nixtla API (TimeGPT)",
     long_description=long_description,
     long_description_content_type="text/markdown",
     url="https://github.com/Nixtla/nixtla",