diff --git a/cosmos_predict2/_src/imaginaire/attention/README.md b/cosmos_predict2/_src/imaginaire/attention/README.md
index a5ae2ad17..a1c340f38 100644
--- a/cosmos_predict2/_src/imaginaire/attention/README.md
+++ b/cosmos_predict2/_src/imaginaire/attention/README.md
@@ -1,3 +1,18 @@
+> [!IMPORTANT]
+> ## 🚀 [Cosmos 3 Has Arrived](https://github.com/NVIDIA/Cosmos)
+>
+> Cosmos 3 is NVIDIA's next-generation foundation model platform for Physical AI. Compared with Cosmos-Predict2.5, Cosmos 3 delivers significantly stronger world prediction capabilities, producing more accurate, coherent, and physically grounded future-state predictions across a wide range of environments and embodiments.
+>
+> Beyond improving prediction quality, Cosmos 3 unifies capabilities that previously required multiple specialized models. A single Cosmos 3 model can reason, predict future world states, transfer across domains and modalities, and generate actions and policies for embodied agents within one unified architecture.
+>
+> This repository is no longer under active development and will receive only limited maintenance updates. Future model releases, features, documentation, and community support will be focused on Cosmos 3.
+>
+> 👉 Visit the new Cosmos home: https://github.com/NVIDIA/Cosmos
+>
+> There you will find the latest Cosmos 3 models, technical reports, tutorials, benchmarks, and ecosystem updates.
+>
+> Thank you for your support of Cosmos-Predict2.5. We encourage all users to migrate to Cosmos 3 for the latest state-of-the-art Physical AI capabilities.
+
 # Imaginaire Attention Subpackage
 
 A subpackage within cosmos_predict2._src.imaginaire that integrates only the best and most reliable
diff --git a/cosmos_predict2/_src/imaginaire/attention/docs/README.md b/cosmos_predict2/_src/imaginaire/attention/docs/README.md
index 5e176b9a9..3e7619704 100644
--- a/cosmos_predict2/_src/imaginaire/attention/docs/README.md
+++ b/cosmos_predict2/_src/imaginaire/attention/docs/README.md
@@ -1,3 +1,18 @@
+> [!IMPORTANT]
+> ## 🚀 [Cosmos 3 Has Arrived](https://github.com/NVIDIA/Cosmos)
+>
+> Cosmos 3 is NVIDIA's next-generation foundation model platform for Physical AI. Compared with Cosmos-Predict2.5, Cosmos 3 delivers significantly stronger world prediction capabilities, producing more accurate, coherent, and physically grounded future-state predictions across a wide range of environments and embodiments.
+>
+> Beyond improving prediction quality, Cosmos 3 unifies capabilities that previously required multiple specialized models. A single Cosmos 3 model can reason, predict future world states, transfer across domains and modalities, and generate actions and policies for embodied agents within one unified architecture.
+>
+> This repository is no longer under active development and will receive only limited maintenance updates. Future model releases, features, documentation, and community support will be focused on Cosmos 3.
+>
+> 👉 Visit the new Cosmos home: https://github.com/NVIDIA/Cosmos
+>
+> There you will find the latest Cosmos 3 models, technical reports, tutorials, benchmarks, and ecosystem updates.
+>
+> Thank you for your support of Cosmos-Predict2.5. We encourage all users to migrate to Cosmos 3 for the latest state-of-the-art Physical AI capabilities.
+
 # Imaginaire Attention Subpackage Docs
 
 * [Basic API & Intro](../README.md)
diff --git a/packages/cosmos-cuda/README.md b/packages/cosmos-cuda/README.md
index 9cd1f6508..64aa14c0f 100644
--- a/packages/cosmos-cuda/README.md
+++ b/packages/cosmos-cuda/README.md
@@ -1,3 +1,18 @@
+> [!IMPORTANT]
+> ## 🚀 [Cosmos 3 Has Arrived](https://github.com/NVIDIA/Cosmos)
+>
+> Cosmos 3 is NVIDIA's next-generation foundation model platform for Physical AI. Compared with Cosmos-Predict2.5, Cosmos 3 delivers significantly stronger world prediction capabilities, producing more accurate, coherent, and physically grounded future-state predictions across a wide range of environments and embodiments.
+>
+> Beyond improving prediction quality, Cosmos 3 unifies capabilities that previously required multiple specialized models. A single Cosmos 3 model can reason, predict future world states, transfer across domains and modalities, and generate actions and policies for embodied agents within one unified architecture.
+>
+> This repository is no longer under active development and will receive only limited maintenance updates. Future model releases, features, documentation, and community support will be focused on Cosmos 3.
+>
+> 👉 Visit the new Cosmos home: https://github.com/NVIDIA/Cosmos
+>
+> There you will find the latest Cosmos 3 models, technical reports, tutorials, benchmarks, and ecosystem updates.
+>
+> Thank you for your support of Cosmos-Predict2.5. We encourage all users to migrate to Cosmos 3 for the latest state-of-the-art Physical AI capabilities.
+
 # Cosmos-CUDA
 
 Sentinel package for determining if CUDA extra is installed.
diff --git a/packages/cosmos-gradio/README.md b/packages/cosmos-gradio/README.md
index 843f2ba82..59413e00c 100644
--- a/packages/cosmos-gradio/README.md
+++ b/packages/cosmos-gradio/README.md
@@ -1,3 +1,18 @@
+> [!IMPORTANT]
+> ## 🚀 [Cosmos 3 Has Arrived](https://github.com/NVIDIA/Cosmos)
+>
+> Cosmos 3 is NVIDIA's next-generation foundation model platform for Physical AI. Compared with Cosmos-Predict2.5, Cosmos 3 delivers significantly stronger world prediction capabilities, producing more accurate, coherent, and physically grounded future-state predictions across a wide range of environments and embodiments.
+>
+> Beyond improving prediction quality, Cosmos 3 unifies capabilities that previously required multiple specialized models. A single Cosmos 3 model can reason, predict future world states, transfer across domains and modalities, and generate actions and policies for embodied agents within one unified architecture.
+>
+> This repository is no longer under active development and will receive only limited maintenance updates. Future model releases, features, documentation, and community support will be focused on Cosmos 3.
+>
+> 👉 Visit the new Cosmos home: https://github.com/NVIDIA/Cosmos
+>
+> There you will find the latest Cosmos 3 models, technical reports, tutorials, benchmarks, and ecosystem updates.
+>
+> Thank you for your support of Cosmos-Predict2.5. We encourage all users to migrate to Cosmos 3 for the latest state-of-the-art Physical AI capabilities.
+
 
 # Model Deployment with Cosmos-Gradio