docs(readme): add release news (#957)

* Update README.md

* Update README.md

README.md

@@ -8,7 +8,7 @@
 
 [![Python 3.10](https://img.shields.io/badge/python-%E2%89%A53.10-blue)](https://www.python.org/downloads/release/python-3109/)
 [![Dataset](https://img.shields.io/badge/%F0%9F%A4%97-ResearchBench-yellow)](https://huggingface.co/datasets/ulab-ai/research-bench)
-[![Arxiv](https://img.shields.io/badge/arXiv-Coming%20soon-b31b1b)](https://github.com/ulab-uiuc/research-town)
+[![Arxiv](https://img.shields.io/badge/arXiv-ResearchTown-b31b1b)](https://arxiv.org/pdf/2412.17767)
 [![Discord](https://img.shields.io/badge/Discord-Join%20Us-7289da?logo=discord&logoColor=white)](https://discord.gg/TwXxGhMB)
 [![WeChat](https://img.shields.io/badge/WeChat-Join%20Us-09B83E?logo=wechat&logoColor=white)](assets/wechat.png)
 [![codecov](https://codecov.io/github/ulab-uiuc/research-town/graph/badge.svg?token=00LRQFX0QR)](https://codecov.io/github/ulab-uiuc/research-town)
@@ -17,6 +17,9 @@
 [English](README.md) | [中文](README-CN.md)
 </div>
 
+## News
+* [12/24] We release our ResearchTown paper on [arXiv](https://arxiv.org/pdf/2412.17767) and ResearchBench data on [HuggingFace](https://huggingface.co/datasets/ulab-ai/research-bench).
+
 ## Introduction
 
 **Research Town** is a multi-agent platform designed for studying community-level automatic research. To achieve community-based simulation, it defines: