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 ### Enhancements
 * db_bench: add estimate-table-readers-mem benchmark which prints these stats.
+## Grapes v2.6.0 (06/14/2023)
+* It is now possible to pass a callback to the Options under speedb_thread_affinity_callback that allows to change thread affinity and other optimization, that the user would like to use (such as numa pinning).
+There is a new example file, example/speedb_thread_affinity_callback_example.cc, that shows how to use the feature.
 
 ## Fig v2.5.0 (06/14/2023)
 Based on RocksDB 8.1.1