Update README.md

README.md

@@ -16,4 +16,8 @@ File structure:
 * `embeddings`: embeddings of the passages encoded with Contriever-MSMACRO.
 * `index`: flat index built with embeddings.
 
-Note: due to large data volume, we are still uploading the data for MassiveDS-1.4T. MassiveDS-140B is ready to go. Code support to run with MassiveDS is in https://github.com/RulinShao/retrieval-scaling.
+**Note**: 
+
+* Due to large data volume, **we are still uploading the data for MassiveDS-1.4T** (ETA: July 31).
+* MassiveDS-140B is ready to go. Please try our 10% subsampled version first!
+* Code support to run with MassiveDS is in https://github.com/RulinShao/retrieval-scaling.