Update README.md

Author: BruceResearch

README.md

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-# LUCIDus: Integreted clustering with multi-view data
+# LUCIDus2: Integreted clustering with multi-view data
+
+🚀 **Looking for the latest version?**  
+The **LUCIDus** package is now actively maintained and extended in  
+**[LUCIDus3](https://github.com/USCbiostats/LUCIDus3)**.  
+We recommend using LUCIDus3 for new projects, as it includes improved features, expanded functionality, and ongoing updates.  
+This repository remains available for reproducibility of the original published method.
 
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