--- IO-AIO/Changes	2008/08/02 14:06:36	1.165
+++ IO-AIO/Changes	2008/09/30 14:07:59	1.168
@@ -6,6 +6,16 @@
 TODO: splice/tee/vmsplice/sync_file_range? (http://kerneltrap.org/node/6505 http://lwn.net/Articles/178199/)
 TODO: aio_fcntl, at least for file-locking
 
+3.1
+	- pre-deref the passed callback object, for increased speed
+          and decreased memory usage.
+	- call on_next_submit callback even for aio_group - impact unknown,
+          but seems more correct.
+        - $req->cb now returns the original callback.
+        - (libeio) pass EIO_GROUP/aio_group requests through the queue without
+          requiring a thread switch.
+        - do some other µ-optimisations.
+
 3.07 Sat Aug  2 16:06:13 CEST 2008
 	- do not include LIBS in autoconf tests.