Adding timeline info of the autocast dataset

tabs/faq.py

@@ -4,6 +4,9 @@ How good are LLMs at making predictions about events in the future? This is a to
 This is a leaderboard showing the performance of LLM tools for making predictions (event forecasting) on a dataset, refined from Autocast.\
 The leaderboard shows tool performance in terms of accuracy and cost. \
 
+🗓 🧐 The autocast dataset resolved-questions are from a timeline ending in 2022. Thus the current reported accuracy measure might be an in-sample forecasting one. We are working
+to incorporate soon an out-of-sample one using another dataset with unseen data.\
+
 🤗 Pick a tool and run it on the benchmark using the "🔥 Run the Benchmark" page! 
 """