Update License

README.md

@@ -1,5 +1,5 @@
 ---
-license: apache-2.0
+license: cc-by-nc-sa-4.0
 language:
   - en
   - zh
@@ -123,6 +123,11 @@ You can start the UI interface by running `python webui.py`, which allows you to
 | ![Image 1](src/figures/gradio_TTS.png) | ![Image 2](src/figures/gradio_control.png) |
 
 
+## To-Do List
+
+- [x] Release the Spark-TTS paper.
+- [ ] Release the training code.
+- [ ] Release the training dataset, VoxBox.
 
 ## Citation
 
@@ -139,6 +144,21 @@ You can start the UI interface by running `python webui.py`, which allows you to
 ```
 
 
+## ⚠ License Update
+
+The model's license has been updated from Apache 2.0 to CC BY-NC-SA due to the licensing terms of some training data.
+
+Key Changes:
+
+- The model can only be used for non-commercial purposes.
+
+- Any modifications or derivatives must also be released under CC BY-NC-SA 4.0.
+
+- Proper attribution is required when using or modifying the model.
+
+Please ensure compliance with the new license terms.
+
+
 ## ⚠️ Usage Disclaimer
 
 This project provides a zero-shot voice cloning TTS model intended for academic research, educational purposes, and legitimate applications, such as personalized speech synthesis, assistive technologies, and linguistic research.