Release notes from official site :
Small bugfix release. Mainly fixing a critical issue where using -c to increase the connection limit was broken in 1.4.8. If you are on 1.4.8, an upgrade is highly recommended.
- Add a systemd service file
- Fix some minor typos in the protocol doc
- Issue 224 check retval of main event loop
- Fix -c so maxconns can be raised above default.
No new features in this version.
1.4.9 is *not* what 1.4.9-beta1 was.
1.4.10 will be the performance release
You can download it from : http://memcached.googlecode.com/files/memcached-1.4.9.tar.gz