While releasing version 1.6 of the Add-on SDK, a contributor, Mingyi Liu, found a minor memory leak (bug 740689). We have since fixed this leak and are today announcing the release of version 1.6.1 of the Add-on SDK.
You can grab the updated version of the SDK as a zip file or tarball and replace your older version. The release notes for 1.6 remain accurate with the exception of fixing bug 740689.
If you have any questions or issues with this hotfix release, please feel free to ask the jetpack team about it in any of the following areas:
post to our discussion group
chat with us on irc.mozilla.org #jetpack
report a bug
check out the source and contribute bug fixes, enhancements, or documentation
For more information on the Jetpack Project check out our wiki